Cold disc capable of improving abnormal shaking of imaging picture of refrigeration infrared detector and detector

The invention belongs to the technical field of refrigeration type infrared detectors, and particularly relates to a cold disc structure capable of improving imaging quality of a refrigeration type infrared detector, a buffer part is arranged on a cold disc to buffer shock waves generated by reciprocating motion of a cold accumulator of a refrigeration cylinder, and the impact strength of the cold accumulator on the cold disc is reduced to the maximum extent; therefore, fluctuation of an imaging picture of the refrigeration type infrared detector caused by shaking of a substrate and an infrared detector chip above the cold disc due to shock waves is avoided, the imaging resolution of the refrigeration type infrared detector is improved, and under the earlier stage that no part is newly added, only the existing cold disc structure needs to be subjected to optimization design, and the manufacturing cost is reduced. Therefore, the effect of obviously improving the shake of the imaging picture can be achieved, an