Automobile exhaust emission detection and collection device

The utility model relates to the technical field of automobile exhaust emission, and discloses an automobile exhaust emission detection and collection device which comprises a detection device body and a filter screen, a gas outlet pipe is fixedly connected to the bottom of the right side of the detection device body, and internal grooves are formed in the front side and the rear side of the gas outlet pipe; a sliding block is slidably connected to the inner wall of the inner groove, a pull rod is fixedly connected to the right side of the sliding block, the pull rod is sleeved with a second spring, a clamping block is fixedly connected to the left side of the sliding block, and clamping grooves are formed in the front side and the rear side of the filter screen correspondingly. According to the automobile exhaust pipe collecting device, the collecting device can be connected with automobile exhaust pipes with different thicknesses, so that the accuracy of a detection result is improved, the mounting risk of