The invention discloses a digital display type tunnel convergence gauge for automatically recording and processing data and a using method of the tunnel convergence gauge. The digital display type tunnel convergence gauge is composed of a measuring device and a recording device, and comprises hooks, a body, an adjusting nut, a temperature sensor, a backlight display screen, a scale position pin, a USB (universal serial bus) data transmission interface, a backlight tension window, a perforated steel ruler, a ruler tape rocking handle, a keyboard and each control key, wherein the hooks are respectively arranged at two ends of the body and positioned on the same axis; the adjusting nut is connected with the body, the steel ruler tension can be adjusted through rotation, and the tension adjusting effect is fed back by the backlight tension window; the temperature sensor and the backlight display screen are fixedly arranged on the body, and the data are subjected to one-key recording by the control keys; the USB interface is arranged below the body so as to transmit the measured data to the recording device; and the recording device is capable of realizing the functions of storing and automatically processing the data and outputting an. xls file. The influence of poor lighting conditions in the tunnel on handwritten records is overcome; and the measured value can be corrected by a temperature measured by the temperature sensor so as to guarantee the accuracy.