To enhance the development efficiency and real-time signal processing capabilities of flexible sensors, this paper presents an integrated signal processing platform specifically designed for resistive flexible sensors. The platform enables rapid acquisition and continuous processing of sensor signals while addressing issues such as nonlinear output and poor stability. It consists of a resistance acquisition system and a signal processing system: the acquisition module, based on an STM32 microcontroller, supports real-time acquisition from eight channels of flexible sensors; the processing module integrates a segmented linear mapping algorithm based on calibration points and supports 11 filtering methods—including hybrid adaptive filtering—as well as real-time waveform visualization. Experimental results demonstrate that the platform achieves precise acquisition of flexible sensor signals, significantly improves signal linearity and output stability, and supports fully integrated real-time operation across the acquisition and processing stages. This platform provides a reliable data foundation and methodological support for the development and application of flexible sensors.