The present invention relates to a crystal form of a substituted aminopyran compound, and a pharmaceutical composition, a preparation method and a use thereof in the preparation of a drug for treating type II diabetes. In particular, the present invention relates to a crystal form IV of a compound as shown by formula (I) and a pharmaceutical composition, a preparation method and a use thereof in the preparation of a drug for treating type II diabetes.本發明關於經取代的氨基吡喃化合物晶型及其藥物組合物、製備方法和用於製備治療II型糖尿病藥物的用途，特別關於式(I)所示化合物的晶型IV及其藥物組合物、製備方法和用於製備治療II型糖尿病藥物的用途。
