Subway station construction water resource collection and utilization system

The invention discloses a subway station construction water resource collection and utilization system which comprises a collection system, a purification system, a classified storage system and a secondary utilization system, a collection device collects rainwater and underground water through a drainage ditch and a dewatering well pipe network of a subway station construction site, and a purification device purifies the rainwater through a sedimentation tank and a filter. The classified storage device stores collected rainwater and underground water in a classified mode through a classified storage device, and the secondary utilization device conveys water to the spraying maintenance area, the in-and-out vehicle cleaning area and the dust falling cleaning area through a water pipe, a water pump and a waterwheel. Rainwater, a construction site water source and underground water are collected through a drainage ditch and a dewatering well pipe network in the collecting device and then stored in the classified