Water affair monitoring and early warning device

The utility model belongs to the technical field of water affair monitoring, and particularly relates to a water affair monitoring and early warning device. The device comprises a monitoring and early warning host, an alarm, a sampling pump and a detection barrel used for containing a sample to be detected are arranged in the monitoring and early warning host, the detection barrel is connected with a sampling pipe through the sampling pump, a water inlet of the sampling pipe is connected with a floating ball placed in water to be detected, the water inlet of the sampling pipe is located at the bottom of the floating ball, and a detection probe is arranged in the detection barrel; the device further comprises a lifting assembly capable of enabling the floating ball to ascend and descend in water, so that discharged water is collected, the floating ball is connected with the water injection pipe and the air injection pipe, when water is injected into the water injection pipe, the water extrudes air in the float