Early warning device and method for water pollution source monitoring device

The invention discloses an early warning device and method for a water pollution source monitoring device, and relates to the field of early warning devices for water pollution source monitoring devices. The device comprises a lifting seat, a longitudinal adjusting assembly, a transverse adjusting assembly, a rotating assembly and a sampling assembly are arranged on the lifting seat, the longitudinal adjusting assembly is arranged on the lifting seat, the transverse adjusting assembly is arranged on the longitudinal adjusting assembly, the rotating assembly is arranged on the transverse adjusting assembly, and the sampling assembly is arranged on the rotating assembly. The sampling assembly comprises a sampling barrel, a power part, a sampling part and a release part, and the sampling part comprises a reset part, a pumping barrel, a transfer box, a pumping rod and a piston. According to the method, negative pressure is generated in a test tube by obtaining a water quality parameter time sequence, carrying out