This article presents some comments about how to achieve the ecology of tannery industry in China. The keys to achieve he ecology of tannery industry are: 1) Reduce the water consumption of leather-making processing in large scale for cutting down the oading of effluent;2) Decrease the amount of chemicals used for lowering the pollution ;3) Develop "green chemicals" for eliminating he contamination produced in production of chemicals;4)Cut down the protein waste during leather-making processing,make a full use f the discarded proteins,bring about the "zero effluent". The measures,which can be conducted for reaching the goal of ecology of annery industry, are split-flow,recovery and recycle of the effluent during leather-making processing;physical techniques instead of raditional chemical procedures; application of biotechnology, and development of biomedicine and biomaterials based on collagen sed for curative treatment,health care,cosmetics and nutrition etc.