Regarding the working hours generated by clinical trial project services under the guidance of good clinical practice (GCP), taking the standard process of a cancer project screening period as an example, and relying on a standardized management model, this paper uses standard time measurement methods to calculate the standard time of the 12 regular tasks in the GCP project. On this basis, it analyzes the GCP project process in detail to find out the reasons for wasted performance hours, and proposes a series of improvement methods and suggestions, such as formulating and implementing a target assessment mechanism, developing standard format cards, using double-line operations research to carry out parallel operations, using quadrant method to divide tasks, using site management organization and resources of hospital departments to reduce coordination loss, and introducing big data management systems, so as to make the work process of clinical research coordinators more refined and professional.