The matrix readout system is mainly for collecting the current signal of sensor array and imaging, which can support up to 64*64 definition array. Matrix readout system can provide 64 selecting signals, 2 DC bias voltages and 64 current readout channels. All current data will be transmitted to android terminal device through Wi-Fi and converted to a 256 grey level image based on the strength of the current. The matrix readout system is very suitable for light or pressure imaging by thin film transistor (TFT) array chip.