Abstract: Objective To examine the status of knowledge about health law in medical workers and to analyze its influence factors for promoting the medical workers'level of health law. Methods The medical workers were randomly chosen with cluster-based sampling method and interviewed with a questionnaire. Results Totally 928 medical workers were interviewed and the total score of law knowledge was 7.89±1.70,with 62% of the medical workers passing the base line.The influence factors of the knowledge level were gender,professional,title,the number of participating in the legal seminars,ways to obtain knowledge of law,and the number of laws and regulations learned.Multiple linear regression analyses showed that female medical workers,the medical workers knowing more than four laws or regulations and obtaining law knowledge more than two ways had higher scores on health law knowledge. Conclusion The level of health law knowledge in medical workers is not satisfied and the training on health law should be strengthened.