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Sophora japonica (scientific name: Styphnolobium japonicum (L.) Schott), also known as Sophora japonica, is a tall tree with pinnate leaves similar to those of Robinia japonica. The flowers are light yellow and can be cooked and eaten, and can also be used as traditional Chinese medicine or dye. Unopened Sophora japonica flowers are commonly known as "Sophora japonica rice" and are a kind of traditional Chinese medicine.

Sophora flower, also known as acacia flower, in a broad sense refers to the flowers and flower buds of leguminous plants, but the open flowers are generally called "sophora flower", also known as "sophora pistil", and the flower buds are It's called "Huaimi". It is often planted beside houses and roadsides. It is widely cultivated in various parts of China, mainly in the north, mostly on the Loess Plateau and the North China Plain. It usually blooms in April and May every year.