The invention discloses salts and crystal forms of a fused ring pyrimidine compound and preparation method and application thereof. The fused ring pyrimidine compound isN-[7-(4-fluoro-2-methoxyphenyl)-6-methylthieno[3,2-d]pyrimidin-2- yl]-1-(piperidin-4-yl)-1H-pyrazol-4-amine, and its structure is shown as in chemical formula 1. The preparation method of salts and crystal forms of the fused ring pyrimidine compound of the invention are simple. The salts and the crystal forms of the fused ring pyrimidine compound at least have characteristics of better stability, lower moisture absorption, multiple crystal forms, better chemical stability and pharmacokinetics, and better solubility.本發明揭露了一種稠環嘧啶類化合物的鹽、晶型及其製備方法和應用。該稠環嘧啶類化合物為N-[7-(4-氟-2-甲氧基苯基)-6-甲基噻吩並[3,2-d]嘧啶-2-基]-1-(哌啶-4-基)-1H-吡唑-4-胺，結構如化學式1所示。本發明稠環嘧啶類化合物的鹽及晶型製備方法簡單；稠環嘧啶類化合物鹽及稠環嘧啶類化合物鹽的晶型至少具有較好穩定性、不易吸濕、多晶型、化學穩定性和藥物動力學，改善的溶解性特徵。
