The invention provides a thermosensitive printing system and method based on an electrocardiograph of an android system. A curve printing module, a bitmap printing module and a character printing module are arranged, curve data, bitmap data and character data are printed through the different printing modules correspondingly, the data do not need to be fused into one graph to be printed, the system response time is shortened, and the printing speed is higher; a printing state monitoring module and a display module are arranged, printing faults are timely detected, found and presented intuitively, and the troubleshooting time of a user is shortened; and different paper feeding speeds can be selected according to needs, the printing time per time is adjusted according to printing content needs, and the printing system and method are applicable to printing requirements for different lengths.