This paper introduces the constitution and working principle of a LabVIEW platform-based pressure detection system. Flexiforce transducer is engaged in the detection system for data acquisition of clothing pressure. Particularly, least square curve fitting algorithm principle and linear regression analysis technique are expounded in the system. Therefore, the proposed pressure detection system could analyze real-time data of pressure and conduct objective test dynamically. This scheme is not only suitable for the design of pressure detection system, but also has certain guiding significance for a wide range of sensor detection system design.