In recent years, the high operating temperature device with its light weight, small size, low heat consumption characteristics, while reducing the cost of the same level of performance as the low temperature detector advantages, gradually become the focus of infrared research. The large charge processing capability has the advantages of wide dynamic range (DR), high sensitivity, strong signal detection, etc., and is widely used in LiDAR, astronomical observation and other fields. In this paper, a long-wave mercury cadmium telluride detector with high charge processing capacity and operating at high temperature is introduced. The charge processing capacity can reach 40Me- at 15μm pixel spacing. The main performance of the device at different operating temperatures is compared and analyzed. At 110K, the effective pixel rate can reach 98.5%, the noise equivalent temperature difference is 28mK, and the peak quantum efficiency is 40%. Compared with the performance at 77K, it can still reach a good level.