ObjectiveTo elaborate constitute, definition, and interpretation of operative characteristics of colorectal cancer in the Database from Colorectal Cancer (DACCA) in the West China Hospital.MethodThe article was described in the words.ResultsIn the DACCA, the operative characteristics module of colorectal cancer mainly included five parts: surgical characteristics, surgical methods, operative skills in details, surgical difficulties, and surgical quality evaluation. Then the surgical characteristics were detailed for their definition, form, label and structure, error correction and update, and how to be used in the analysis of data in the DACCA.ConclusionsThrough detailed description and speci-fication of surgical characteristics of colorectal cancer in DACCA in West China Hospital, it can provide a reference for standar-dized treatment of colorectal cancer and also provide experiences for the peers who wish to build a colorectal cancer database.