The invention discloses a remotely controllable water quality detection boat and a water quality detection method applying the same. The water quality detection boat comprises a boat body, a driving module, a detection module, a sampling module and a control module, wherein the driving module, the detection module, the sampling module and the control module are all arranged on the boat body, and the control module is in signal connection with a terminal. With the remotely controllable water quality detection boat and the water quality detection method applying the same of the invention adopted, water quality pollution conditions including the pH value, chromaticity and heavy metal ions of a river which is inspected by the water quality detection boat can be monitored at any time; samplingextraction can be performed on detected pollutants, so that evidences can be detected, analyzed, and fixed. The remotely controllable water quality detection boat and the water quality detection method applying the same can be widely applied to river channel water quality detection. With the remotely controllable water quality detection boat and the water quality detection method applying the sameadopted, the working burden of environment-friendly law enforcement personnel can be greatly reduced. The remotely controllable water quality detection boat and the water quality detection method applying the same can serve as a river chief for protecting the water quality of rivers and lakes.