The present invention relates to chemical products, and is especially preparation process of pyrazolyl anthranone chloride. Pyrazolyl anthranone chloride is prepared with 1-amino anthraquinone as material and through diazo reaction, reduction, condensation and chlorination. The production process of the present invention has high yield and stable quality, and the produced pyrazolyl anthranone chloride is dark yellow powder, has purity over 98.5 % and is intermediate of producing high grade dye, pigment and other chemical product. |