Portable collector for gas overflowing from seismological observation well

The utility model discloses a portable collector for gas overflowing from a seismological observation well, which comprises a fixing plate, a collecting groove is arranged on the edge of one side of the lower surface of the fixing plate, and a T-shaped sliding groove is arranged on the other side of the lower surface of the fixing plate. During use, a test tube is placed in a placing hole, a T-shaped sliding block is inserted into a T-shaped sliding groove, then a mounting plate is rotated to open a fixing hole, a sealing plug is placed in the fixing hole, the mounting plate is closed, then the fixing plate can be held to move to the position of a well mouth of a collecting groove and an observation well, and overflowing gas is injected into the test tube through a connecting hole. Then the test tube can be pulled out through the T-shaped sliding block, and when the test tube moves to the position where the test tube coincides with the fixing hole, the sealing plug can be pushed to descend through the pressin