Objective To develop the Knowledge, Attitudes and Practice Scale for Nursing Clinical Teachers Regarding Prevention and Handling of Workplace Violence in Nursing Students, and to test its reliability and validity. Methods Based on the knowledge, attitudes and practice theory, the scale was initially formed through literature review, semi-structured interviews and Delphi expert consultation method.Then 302 nursing clinical teachers were surveyed to analyze the reliability and validity of the scale. Results The final scale contained 44 items factored into 3 first-level indexes, namely knowledge, attitudes and practice.I-CVI of the scale ranged 0.889 to 1.000, and S-CVI/Ave was 0.941.In exploratory factor analysis, 4, 2 and 2 common factors were respectively extracted from first-level indexes of knowledge, attitudes and practice, and the cumulative variance contribution rates were 73.897%, 75.388% and 82.052%, respectively.Fitness indexes of confirmatory factor analysis all met the requirements.The Cronbach′s α coefficient of the scale was 0.961, and the Cronbach′s α of each first-level index were 0.920, 0.904 and 0.977, respectively.The split-half reliability coefficient was 0.987 for the whole scale, and 0.965, 0.950 and 0.989 for the first-level indexes, respectively.The test retest reliability coefficient of the scale was 0.927. Conclusion The scale enjoys good reliability and vali-dity, which can be used as an effective tool to evaluate nursing clinical teachers′ capacities of preventing and handling workplace violence in nursing students.