Water quality monitoring assembly and underwater mechanical equipment

The utility model provides a water quality monitoring assembly and underwater mechanical equipment, the water quality monitoring assembly comprises: a water suction pump, the water suction pump comprises a water suction flow channel, and a water suction inlet and a water suction outlet communicated with the water suction flow channel; the water quality detection component comprises a detection probe, a detection flow channel as well as a detection inlet and a detection outlet which are communicated with the detection flow channel, at least part of the detection probe is located in the detection flow channel, and the detection probe is used for reacting with water flowing through the detection flow channel so as to feed back a detection signal; two ends of the first connecting pipe are respectively connected with the water absorption outlet and the detection inlet; wherein the detection probe is an electrochemical probe, and the detection outlet is positioned on one side, far away from the flow channel bottom