The work aims to design a test platform based on TRIZ theory to solve the problem that it is hard to directly detect the die-cutting pressure on the die-cutting machine. Firstly, the fiber Bragg grating sensor was introduced to detect the die-cutting pressure. According to the characteristics of the fiber Bragg grating sensor, and combined with the Cause Effect Chain Analysis and completeness rule in TRIZ theory, a preliminary design scheme for directly detecting the die-cutting pressure was formed. Secondly, the stability, measurement accuracy and deformation resistance in the preliminary design scheme were improved with the principle of conflict resolution. The base structure in the preliminary scheme was further optimized by the material-field model analysis method. And the overall design scheme of the test platform was obtained. Finally, the static analysis and modal analysis of the key part of the test platform were carried out. The maximum stress and maximum deformation of key part, the top plate, were 77.063 MPa and 0.525 24 mm respectively, indicating that both strength and stiffness met the requirements, and resonance would not occur. It was verified that the test platform designed based on TRIZ theory could meet the working requirements of fiber Bragg grating sensor. The innovative design of the die-cutting pressure test platform guided by TRIZ theory provides a new method for accurately measuring the die-cutting pressure of die-cutting machine.