Water quality detection system and water quality detection method

The invention specifically discloses a water quality detection system and a water quality detection method. The water quality detection system comprises at least one sampling device, a sample separating device, at least two analysis devices and a control device, and each sampling device is provided with a first sample inlet end and a first sample outlet end; the sample separating device is provided with a second sample feeding end and at least two second sample discharging ends, and the second sample feeding end is communicated with the first sample discharging end; the number of the analysis devices is the same as that of the second sample outlet ends, and each set of analysis device is communicated with one of the second sample outlet ends; the control device is respectively connected with the sampling device, the sample separating device and the analysis devices so as to control the sampling device, the sample separation device and the analysis devices to work. According to the water quality detection syst