The invention relates to the field of laser application, and particularly provides a laser module temperature control testing device with high accuracy. The testing device is capable of providing a wider temperature control range and improves temperature changing speed and testing efficiency by a clamping device being changed, heat dissipation parts being changed to reduce an influence of expansion with heat and contraction with cold on tests, a heat insulation piece being increased and heat dissipation structures being changed. The laser module temperature control testing device comprises a fixed platform. A clamping device, a refrigeration piece and a radiator are arranged above the fixed platform from bottom to up. The laser module temperature control testing device further comprises a temperature control device. The temperature control device comprises a single chip computer and temperature sensors. The temperature sensors are connected with the single chip computer and are controlled by the single chip computer concentratedly. The temperature sensors are fixed on the radiator and the clamping device, the single chip computer adjusts proportional integral derivative (PID) parameter values automatically according to feedback temperature differences of the temperature sensors. In testing, products just need to be inserted to be positioned well, and therefore the laser module temperature control testing device is easy to operate, is good in consistency, and improves testing efficiency largely.