The invention relates to the field of artificial hair, in particular to a preparation process of an artificial hair product. The process comprises the following steps of: 1, sorting and neatening a protein fiber raw material; 2, arranging the hair on a three head machine; 3, folding hair wefts arranged in the step 2 into four layers, partitioning the four layers into 24 small bundles and winding the small bundles on 24 aluminum pipes; 4, putting the hair wefts wound on the pipes in the step 3 into a steam setting cabinet for setting; 5, taking the hair wefts out of the setting cabinet and cleaning the hair wefts with water; 6, taking the hair wefts down from the aluminum pipes and soaking the hair wefts in medicinal liquid; 7, putting the hair wefts soaked by the medicinal liquid into a steam drying chamber for drying; 8, straightening the dried hair wefts by permanent hair styling; and 9, packaging. The artificial hair produced by the process is convenient to wear and comb, is soft and bright and has a compact structure, high elasticity, and low maintenance cost when used subsequently.