This paper uses the sensor convert animal myocardial contractile force into a voltage signal, which is collect by a MCU acquisition, transferred to the computer, using the PC visualization language VB compiled a data acquisition and processing platform, collected data can be stored into a computer, and real-time curve of the data changes is plotted at any time. Through testing the tissue engineered cardiac tissue strips micro contractility, it was proved that the platform operation is of stable performance, accurate data acquisition, processing method effective, the system can also be applied in other similar signal detection and acquisition and other fields.