The invention relates to the technical field of semiconductor laser testing, in particular to a transmission type temperature-controllable laser-exciting remote fluorescent material testing device capable of realizing laser-exciting remote fluorescent material testing. The transmission type temperature-controllable laser-exciting remote fluorescent material testing device comprises an integratingsphere I, an integrating sphere II, an integrating sphere III, a temperature control platform, a sliding rail I, a sliding rail II, an optical platform, a laser diode, a sliding block I, a sliding block II, a sliding block III, a spectrometer I, a spectrometer II, a spectrometer III and a driving power supply, wherein the integrating sphere I is installed on the sliding block 3 and is in sliding fit with the sliding rail I and the sliding rail II separately through the sliding block III, the integrating sphere II is installed on the sliding block II and is in sliding fit with the sliding railI and the sliding rail II separately through the sliding block II, the integrating sphere III is installed on the sliding block I and is in sliding fit with the sliding rail I and the sliding rail IIseparately through the sliding block I, the laser diode is arranged beside the integrating sphere I, and a light beam emitted by the laser diode is irradiated to a temperature control platform for a fluorescent material to be placed through the integrating sphere I.