Multi-parameter water quality sensor

The invention discloses a multi-parameter water quality sensor, relates to the technical field of water pollution monitoring equipment, and aims to solve the problem that non-detection parameter impurities influence a detection result. According to the multi-parameter water quality sensor, the packaging middle plate, the pressing shaft and the single-parameter sensor are arranged, so that the convenience and the sealing performance of integrated installation of the multi-parameter water quality sensor are improved, and the convenience of maintenance, disassembly and assembly of the multi-parameter water quality sensor is improved. By arranging the transparent window, the blocking piece, the collection cavity and the blocking installation disc, the influence of large-particle-size non-detection parameters such as silt and underwater organisms on the water quality monitoring result is reduced, the service life of the multi-parameter water quality sensor is prolonged, and the detection stability of the multi-par