The work aims to design a new creep error detection device for weighing sensor with automatic weight loading and unloading as well as such functions as data collection, processing and storage, so as to improve the efficiency and automation degree of the existing creep error detection of weighing sensor. The finite element analysis technique was used to analyze the statics of the creep error detection device frame for weighing sensor, thus verifying the design rationality of the creep error detection device for weighing sensor. According to the analysis results, it could be seen that the maximum stress of the frames for the main components of the error detection device for weighing sensor was 29.44 MPa, which was less than the yield strength of the frame material. It was further verified that the structural design of the tested device was reasonable. With such device, the more accurate creep error detection can be achieved, which improves the automatic management level of the companies and manufacturers.