Understand the clinical trial process of the clinical trial center, how the customer service center plans to collaborate with physicians and subjects in this process, and the conditions for becoming a research subject. The customer service center plan fully understands the possible outcomes after treatment and the probability of side effects. Transforming the results of scientific research into useful to humans, the clinical test center can improve human health and longevity in medicine, that is, human trials. The main purpose is to monitor the safety of the drug. Through this phase of the trial, the clinical trial center has undergone scientific research through rigorous review procedures. The customer service center plans to understand the basic concepts of the rights, obligations and precautions of participants in clinical trials.