Gao Shi was the leader of the "Border Plugging Poetry School" in the Sheng Tang Dynasty, and his Border Plugging Poetry is characterized by "majestic and tragic". His poems are still qualitative, majestic and simple. Gao Shi was young and poor, and had a chivalrous spirit. He once roamed the Liang and Song Dynasties, farming for his own subsistence, and with his own bold and upright personality, his poems reflected a broader dimension and a deeper theme. Gao Shi's psychological structure is relatively loose, and his character is straightforward, so his poems are mostly straightforward, or with narratives and discussions, and less use of picaresque techniques. For example, "Yan Ge Xing", at the beginning of the poem, point out the national difficulties, highlighting the tense atmosphere: "Han's smoke and dust in the Northeast, Han's resignation from the family to break the remnants of the thief"; at the end of the direct comments: "You do not see the sands of the battlefield bitter, so far, still remember General Li!" There is both earnest expectation and deep sigh, implicit and powerful.

Gao Shi's poetry focuses on people rather than natural landscapes, so he seldom writes about landscapes alone, but often writes about landscapes when he expresses his feelings, so the landscape bears the mark of the poet's personal subjectivity. In "The Swallow Song", "the desert is poor, the grass is withered, and the soldiers are scarce in the lonely city" is used to delineate the bleak scene, and the desert, the withered grass, the lonely city, and the setting sun are used as comparisons to make up the subjective emotional picture, which emphasizes the valor of the warriors who fought more than just the battle more strongly. Gao Shi's linguistic style is simple and pure, without carving. For example, one of the Two Songs of Farewell to Dong Da: "Thousands of miles of yellow clouds twilight of the sun, the north wind blowing geese and snow one after another, do not worry about the road ahead of us, who under heaven does not know the king." The technique seems to have been done with no effort at all, and the words come out from the meaning, without any deliberate rhetorical modification.

Gao Shi's life and creative work can be divided into four periods:

1) before the 20th year of the new year, failed to find a job, trapped in Song, is the beginning of poetry;

2) from the 20th year of the new year to eight years of Tianbao, the first time to go out of the plugs, wandering without success, for the creation of the period of the most prosperous;

3) eight years to fourteen years of Tianbao, the sidelines down the bureaucrats, from the military into the Curtain, the creation of the talents continue to be played;

3) eight years to 14 years of Tianbao, from the military into the Curtain

4 Zhide Yuanzai (756), after the career, although also wrote some masterpieces, but on the whole, compared with the first three periods of inferior.

Gao Shi's poems are wide-ranging, rich in content, and highly realistic. There are mainly the following categories:

1) Border Poetry, the highest achievement. His masterpieces, such as "Yan Ge Xing", "Five Songs of Jimen Xing", "On the Plateau", "Under the Plateau", "Jizhong Song", and "Three Songs of Nine Songs", glorified the warrior's bravery to serve the country and build a career, and also wrote about the hardship of their military life and their wish for peace, as well as exposed the arrogance and extravagance of the generals, their lack of compassion for the soldiers, and the court's lack of understanding of reward and punishment and lack of measures to secure the borders, thus revealing his concern for the country and love of the people. Some of Gao Shi's works that praised unjust wars and discriminated against ethnic minorities, such as "Li Yunnan's Poem on the Conquest of the Barbarians", were the dregs of such poems.

②Poems reflecting the plight of the people. These poems are more profound to expose the contradiction between the ruler and the people, such as "from Qi wading in the Yellow River on the way to thirteen" of the ninth, "Dongping Road in the water", etc., a true description of the vast number of peasants suffered from taxes, corvée service and natural disasters of the pressure, and expressed sympathy for their plight, he also wrote a number of poems in praise of the "good officials", from the "benevolent government" to the "good officials", from the "benevolent government" to the "good officials", and so on. He also wrote some poems praising the "good officials" and advocating the lightening of levies from the idea of "benevolent government", which had a certain progressive effect at that time.

3) Poems of satirizing the times and hurting people. Most of the poems criticized the ruler's extravagance, such as the "Ancient Songs and Acts" and the "Two Poems on the Road". There are also some poems written after the Anshi Rebellion, which show anxiety and indignation towards the political situation, such as <> and <>.

4. The poems are the most numerous, and their ideological content is relatively complex. Like "Farewell to Counselor Wei", "Paying Xue Sanzhong and Sending Guo Shaofu Micro", "Giving Cui Er", "Fengqiu", etc., these poems express the sorrow and anger of not being able to realize one's talent and not being able to fulfill one's ambition, and they are dissatisfied with the reality.

And like the "fugue also mountain chant send Shen four mountain people", "people day send Du two pickup", or express friendship and parting, or yearning for seclusion life, sincere feelings, quite infectious. These poems also have some envy of fame and wealth and touting the work of officials and nobles, and not desirable. In addition, there are some poems about history, such as "Ten Songs in the middle of the Song Dynasty", as well as some poems describing the scenery of the journey, such as "Three Poems about the Qingyi Army's Entry into Juyong" and "A Journey to the Mountains of Pengzhou", which are also quite good. Gao Shi's poems were already famous at that time. Gao Shi's biography in the New Book of Tang says that he was "self-elevated by his temperament. Every time he wrote a poem, the good people would spread it. Yin璠《He Yue Ying Ling Ji》also praised him for his "many thoughts and feelings, as well as his temperament, so the court and the countryside appreciated his writings". Wang Shizhen pointed out that the style of Gao's poems was "sad and strong, but thick" ("Poetry of the Hall of Scripture").

Sincere feelings, spiritedness, straightforward language, and thick writing power are the basic features of Gao Shi's poetic style. In terms of poetic style, Gao Shi's poems are more ancient than modern, and he is especially good at the seven ancient poems. The long lines of songs, with their vastness and staccato sounds, are the most heroic and vigorous. The five ancient styles are simple and straight, close to the flavor of the ancient poems of the Han and Wei dynasties. In the near style, seven lines and seven poems were the best. The compilation of Gao Shi's works was originally a collection of poems compiled by Zhang Jiugao and prefaced by Yan Zhenqing in the seventh year of the Tianbao era, but it is unknown today. The new and old Tang Shu recorded 20 volumes of his collected writings, but they are also not extant. Today there are "four libraries" collected by Ming Ji Gu Ge shadow Song copy of "Gao Changshu set", where the poetry 8 volumes, 2 volumes of literature. There is also "four series of journals" photocopy of the Ming movable type 8 volumes. There are also Ming Zhang Xunye, Xu Zichang and other editors, all in 2 volumes. Ming Yang Yitong edited Gao Shi ji 1 volume. Dunhuang "Tang poetry selected scrolls", "Gao Shi poetry collection scrolls", some of the remaining anonymous poems. Note book have today's Liu Kai Yang "Gao Shi poetry collection editorial note", Sun Qinshan "Gao Shi collection of school notes", are attached to the genealogy. Research on the life of Gao Shi's writings are Wang Dazin "Poet Gao Shi life department poetry", Peng Lan "Gao Shi lineage examination", Zhou Xunchu "Gao Shi genealogy", Fu Xuanqiong "Tang Dynasty poets series of examination - Gao Shi genealogy of a number of issues".