The present invention relates to a crystalline form of a 1,2,4-triazin-3-amine derivative and a preparation method thereof. Specifically, the present invention relates to A, B, C, D, E, F, G, H, J crystalline forms of a compound of formula (1) and a preparation method thereof. The crystalline form of the compound of formula (1) of the present invention has good stability and can be better for clinical use.本發明涉及一種1,2,4-三?-3-胺類衍生物的晶型及製備方法。具體地，本發明涉及式（1）化合物的A、B、C、D、E、F、G、H、J晶型及製備方法。本發明式（1）化合物的晶型具備良好的晶型穩定性，可更好地用於臨床。
