OBJECTIVE：To provide refere nce f or the quality control and evaluation of rice-wine processed Coptidis Rhizoma decoction piece. METHODS ：Taking 17 batches of rice-wine processed Coptidis Rhizoma decoction piece from different manufacturers as samples ，HPLC method was adopted to determine the contents of 4 kinds of alkaloids as epiberberine ，coptisine， palmatine and berberine. The compound weights of epiberberine ，berberine，palmatine and berberine were calculated by the subjective and objective combination weighting method （AHP combined with variation coefficient ）. Then the quality evaluation method was used to evaluate the quality of decoction pieces combined with the appearance of decoction pieces and the contents of 4 alkaloids. The percent mass constant was calculated and the grade of rice-wine processed Coptidis Rhizoma decoction piece was classified. RESULTS ：According to the results of content determination of 4 kinds of alkaloids ，among 17 batches of samples ，a total of 13 batches of samples met the requirements of 2015 edition of Chinese Pharmacopoeia （part Ⅳ）. Mass constants of 13 batches of qualified samples were 10.03-26.96，and the percent mass constants were 37.20％-100％. If the percent mass constant ≥ 80％ of the sample was listed as the first-class product ，the sample with the percent mass constant between 50％-＜80％ was classified as the second-class product ，and the rest was listed as the third-class product ，therefore the quality constant of first-class product was ≥21.57，that of second-class product was 13.48-＜21.57，and that of third-class product was ＜13.48. According to the grading standard ，3 batches of 13 batches of qualified samples are classified as first-class products ，6 batches are classified as second-class products ，4 batches are classified as third-class products. CONCLUSIONS ：The established subjective and objective combination weighting method and quality constant method can more scientifically and reasonably classify rice-wine processed Coptidis Rhizoma decoction piece.

The fundamental purpose of tissue-engineered skin development is to restore the skin barrier function of patients with severe skin injury, and this kind of product has become an ideal substitute for skin transplantation in clinic at present. With the development of three-dimensional bioprinting technology, the three-dimensional skin models constructed with complex structures such as skin appendages are also becoming increasingly mature. The stable three-dimensional skin model is widely used in skin physiological and pathological research, cosmetic safety and efficacy evaluation, and alternating animal experiments. In this paper, we introduced the three-dimensional bioprinting technology in categories, summarized the types of bio-inks commonly used for skin model construction, reviewed the recent advances of three-dimensional bioprinting technology applied in the field of skin tissue engineering, and explored and prospected the future directions of its research development and application fields.