In power test units at all levels, the calibration of equipment is one of the daily tasks. Various departments have repeatedly purchased many standard equipment, and some calibration tasks require moving the standard equipment to temporarily build a corresponding calibration system, which is expensive and unfavorable for the maintenance of the standard equipment. The paper proposes a comprehensive calibration platform based on the network sharing of instruments. The platform optimizes the standard equipment configuration of each department and automatically allocates the standard equipment on the platform according to the calibration task. Then it builds the calibration platform and completes the calibration task in accordance with the calibration process. The platform can perform multiple same or different calibration tasks at the same time and generate corresponding calibration certificates, which reduces the workload of calibration personnel and improves the reliability and utilization of standard equipment. The paper gives the model architecture and workflow of the platform. Experiments verify the effectiveness of the platform.