Assembly type detection channel

The utility model discloses an assembly type detection channel, and belongs to the field of detection channels. The device comprises a bottom plate, a side plate and a top plate which are assembled into a detection channel, a limiting groove is formed in the top of the side plate in the length extension direction, and limiting blocks matched with the limiting groove are correspondingly arranged atthe tops of the two sides of the top plate; a plurality of through holes are correspondingly formed in the side plates on the two sides, and ventilation pipes are arranged in the corresponding through holes on the two sides; the two ends of the ventilation pipe extend to the outer sides of the side plates and are each provided with a limiting disc. The utility model overcomes the problems of inconvenient installation and poor stability of a detection channel in the prior art, provides an assembly type detection channel, and can solve the problems of easy water seepage and poorer impact resistance of the side surface