Objective To construct the knowledge

attitude and practice（KAP） scale for enhanced recovery after surgery（ERAS） targeting colorectal cancer（CRC） patients. Methods The KAP theory was used as a framework to determine the pool of questionnaire items of the scale by using literature review and in-depth interviews

and the Delphi method was used to determine the questionnaire indicators. Results "The ERAS KAP Scale for CRC Patients" consists of 3 level 1 items and 31 level 2 items

including 11 knowledge items

11 attitude items

and 9 practice items. The expert positivity coefficient was 100.00%

and the expert authority coefficient（Cr） was 0.847; the coefficient of variation of each dimension was 0.090-0.169

and the Kendall coordination coefficient was 0.120-0.246; the content validity indicator score of each item（I-CVI） was 0.95-0.98

and the content validity score of the total scale（S-CVI） was 0.97. Conclusion "The ERAS KAP Scale for CRC Patients" developed in this study has good reliability and validity and can be used as a survey tool to understand the current status of ERAS KAP among patients undergoing surgery for CRC.