Rainwater collection and utilization device for power transmission and transformation project construction site and use method of rainwater collection and utilization device

The invention belongs to the technical field of ecological restoration, and provides a transmission and transformation project construction site rainwater collection and utilization device and a use method thereof.A water inlet cylinder is arranged on a water storage tank, the end, away from the water storage tank, of the water inlet cylinder is closed, and a plurality of water inlets are formed in the side wall of the water inlet cylinder; a collecting hopper is arranged outside the side wall of the water inlet barrel and located at each water inlet, the collecting hoppers can collect external rainwater when it rains, water vapor can be left in the water inlet barrel when water evaporates, and the problem that the rainwater collecting amount is reduced due to the fact that the water vapor evaporates to the outside is avoided; meanwhile, a temperature sensor is arranged in the water inlet cylinder; a baffle is arranged in the side wall of the water inlet cylinder and located at each water inlet through an ele