Water-saving irrigation device for highway greening isolation belt

The utility model provides a water-saving irrigation device for a green isolation belt of an expressway, which belongs to the technical field of irrigation devices and comprises a tank body, support legs are fixedly connected to the bottom of the tank body, a water collecting hopper is connected to the top of the tank body, a mounting groove is formed in the top end of the tank body, and a water outlet is formed in the top end of the tank body. A filter plate is arranged in the mounting groove, a baffle is arranged in the top end of the water collecting hopper, and water leakage holes are formed in the outer side of the baffle in the circumferential direction. Through cooperation of the water collecting hopper and the tank body, in rainy days, rainwater can be collected and stored, a water source is provided for irrigation of an isolation belt, dependence on the water source is reduced, use is more environmentally friendly, use and popularization are facilitated, rainwater can be filtered when collected, the