High-temperature endurance testing machine

A high-temperature endurance testing machine comprises a thermotank used for providing a specified temperature environment for a test and force transmission levers, wherein the outer end of each force transmission lever is used for suspending a weight, the inner end of each force transmission lever is connected with an upper pull rod, and each upper pull rod is hung into the thermotank and used for suspending a group of samples which are connected in series; the high-temperature endurance testing machine is characterized in that a balance adjusting device for adjusting the horizontal balance of the lever is arranged on each force transmission lever. The high-temperature endurance testing machine solves the problems in the prior art, reduces the weight of the whole machine, increases the number of test samples, and ensures the accuracy in testing at the same time.