Thank you for your positive replies! ! ! Hope for more replies. Some literature suggests: "We are dealing with healthy people. In terms of ward management, we cannot require them to stay in bed like patients. We need to provide activity venues and activities, and at the same time pay attention to the psychological care of the subjects. The subjects are in the trial During the process, you will be worried about the effects and adverse reactions of drugs, and the pain caused by puncture, etc. " Let me briefly summarize: first, it can better realize the psychological care of healthy subjects and reduce the impact caused by subjective factors; second, it can be more effective. Centralized clinical management, including subjects’ diet and daily routine, clinical medication, observation of clinical symptoms, collection of biological samples, detection and timely treatment of adverse events, etc.; 3. Equipped with specialized trial medical staff to be more targeted Conduct medical care and monitoring of the subjects; 4. Avoid possible cross-infection in the clinical ward.