Multifunctional ecological restoration device and water quality purification method thereof

The invention provides a multifunctional ecological restoration device and a water quality purification method thereof, and relates to the field of river regulation. The device comprises an ecological restoration bed which is of a hollow structure and is defined by a floating bed carrier and a floating bed main body, and an intelligent monitoring unit for monitoring the water quality of the front section and the rear section of the ecological restoration bed, the floating bed main body comprises a floating bed frame body, a flow guide structure, a biofilm formation combined filler and a telescopic device, the telescopic device comprises a moving box which reciprocates in the floating bed frame body along the vertical direction, and the moving box realizes the effect that the floating bed main body can automatically adjust the height of the device along with the lifting of the water level; therefore, the device can ensure effective utilization and purification of the lower-layer space of the riverway in the we