Crystalline pyridone compound, which is the white needle crystal containing no water and other crystallization solvents. Its unit cell belongs to monoclinic system and has space group of P21/n, wherein a = 3.8512(2), b= 20.2535(12), c = 12.1628(6) Å, β = 92.850(5)° and crystal cell volume V = 947.53(9) Å3. Pyridone compound crystal of this form has the needed properties for preparing or making treatment compositions in large scale. It can be used for treating organs fibrosis of liver, kidney, lung and etc. and reducing skin scars.
