In China, Zizyphus jujuba is mainly distributed in the south of Fujian, Guangdong, Guangxi, Sichuan and other provinces, with a small number. There are also areas in Hainan and Taiwan Province where the altitude does not exceed 1 1,400 meters, dry-hot valleys, courtyards and coastal areas. Most of them are in wild and semi-wild state, and the area is estimated to be less than 830 hectares. For a long time, the protection and development of Ziziphus jujuba fruit trees have been neglected because of the large gap in comparative interests between economic crops such as longan, litchi, mango, pineapple, coffee, rubber and coconut and Ziziphus jujuba. Especially under the influence of the ultra-left thought in the past, a large number of old tamarind trees were cut down and the resources were seriously damaged.

Zizyphus jujuba is mainly distributed in Jinsha River, Nujiang River, Yuanjiang dry-hot valley and Xishuangbanna in Yunnan, where the heat is better at an altitude of 50- 1350 meters. There are two types of natural growth: Banna sweet type and ordinary acid type.

Among them, the dry-hot valley of Jinsha River in Sichuan and Yunnan is the main producing area of tamarind in China, with an annual output of 100 tons, which is superior to other areas in the province in terms of yield, quality and flavor. In the mid-1970s, Suanjiao once attracted the attention and inquiry of foreign businessmen at the Canton Fair, but unfortunately, due to the limited conditions at that time, the export could not be opened in time. Over the years, with the development of economy and people's further understanding and development of Suanjiao, Suanjiao has emerged in the domestic and foreign markets and made great contributions.

Zizyphus jujuba originated in tropical Africa, and was introduced to India by Sudan for breeding and planting, so that people mistakenly thought Zizyphus jujuba was a native plant in India. Among all tropical fruit trees in the world, Zizyphus jujuba is the most widely distributed, and it is distributed on all continents except Antarctica. Asia is the main producing area of sour horn in the world. It is cultivated in India, Sri Lanka and Southeast Asian countries, and mainly grows on dry slopes with good heat conditions, less rainfall and altitude not exceeding1500 m. Among them, there are orchards in India, Philippines and Thailand, and the output is very considerable. India alone produces 275,000 tons of pods per year. The Philippines exports sour horns worth $80,000 every year, and Thailand's famous sweet and sour horns are also exported in large quantities every year to earn foreign exchange.

In America, Zizyphus jujuba is mainly distributed in many Latin American countries and the dry and hot areas of the United States, and the planting area in Mexico is the largest on this continent, reaching 4443 hectares. The United States is mainly distributed in Hawaii, the southern section of the western Pacific coast, the Gulf Coast and Florida, with the famous Menell sweet and sour cape.

In Guatemala, it is concentrated in the dry and hot Motagua Valley, where a large area of wild acacia grows. In Europe, tamarind is mainly distributed in coastal slopes and barren hills below 1000m in Portugal, Spain, France, Italy, Greece and other countries. Some families also like to plant sour horns to beautify the courtyard. In Oceania, tamarind is mainly distributed in Australia, Fiji and other countries. Suanjiao, also known as tamarind, sour bean, sour dumpling, sour plum, nine-layered fruit, Demahan (Yuanjiang Dai language) and Tongxuexiang (Yunnan), belongs to the genus Suanjiao in Leguminosae and is suitable for planting in dry-hot valleys. It is an evergreen tree that can be used both as food and medicine. It originated in African savanna, and was introduced to Asia by ancient Arabs, and then to China. In China, it is mainly distributed in the south of Fujian, Guangdong, Guangxi, Sichuan and Yunnan provinces (autonomous regions) and Hainan and Taiwan Province provinces. Born in dry slope grasslands, dry-hot valleys, courtyards and coastal areas with an altitude of less than1400 m, most of them are wild and semi-wild, with an estimated area of about 830hm. Suanjiao once attracted the attention and inquiries of foreign merchants at the Canton Fair.

Asia is the main producing area of sour horn in the world. It is cultivated in India, Sri Lanka and Southeast Asian countries, and mainly grows on dry slopes with good heat conditions, less rainfall and altitude not exceeding1500 m. In America, Zizyphus jujuba is mainly distributed in many Latin American countries and the dry and hot areas of the United States. In Africa, tamarind is mainly distributed in low-altitude barren slopes and deserts in Egypt, Ethiopia, South Africa, Lesotho, Kenya, Nigeria, Cameroon, Sudan and other countries.

South Africa and Ethiopia are relatively large. European acid horn is distributed in coastal slopes and barren hills below 1000 meters above sea level in Portugal, Spain, France, Italy, Greece and other countries. In Oceania, tamarind is mainly distributed in Australia, Fiji and other countries.