Sintering cavity for improving sealing performance of sintering cavity

The utility model discloses a sintering cavity for improving the sealing performance of the sintering cavity. The sintering cavity comprises a lower cavity body, the bottom end of the lower cavity body is provided with a dismounting structure, the top end of the lower cavity body is provided with an upper cavity body, the two sides of the top end of the lower cavity body are respectively provided with a guide structure, and the top end of the lower cavity body is provided with a sealing structure. According to the sintering cavity for improving the sealing performance of the sintering cavity, when the upper cavity and the lower cavity are closed or separated, guide structures are arranged on the two sides of the top end of the lower cavity; the inner sleeves arranged in the two sides of the upper cavity can directionally slide up and down outside the guide rods vertically fixed to the two sides of the bottom end of the lower cavity when the upper cavity moves upwards or downwards, the upper cavity and the low