The invention discloses a solar device for strengthening petroleum recovery. The solar device for strengthening petroleum recovery comprises a water storage tank and a connecting box. A connecting plate and a second connecting plate are fixedly connected to the sides, close to each other, of the water storage tank and the connecting box, and a plurality of heat collecting pipes are fixedly connected between the sides, close to each other, of the water storage tank and the connecting box at equal intervals. Heat conduction pipes are fixedly connected to the inner sides of the heat collecting pipes, and two ends of the heat conduction pipes communicate with the water storage tank and the connecting box separately. A screw and a sliding rod are installed between the two ends, close to each other, of the first connecting plate and the second connecting plate, and two ends of the screw are rotatably connected to the bottom side of the first connecting plate and eth top side of the second connecting plate separately. According to the solar device for strengthening petroleum recovery, through the design of the water storage tank, the connecting box and other structures, water in the waterstorage tank can be circulated and heated to enable the steam generated by heating to be faster, through the design of first connecting plate, the second connecting plate and other structures, and the outer walls of the heat collecting pipes and the inner walls of the heat conduction pipes can be cleaned at the same time.