Water-saving fruit tree planting irrigation device

The invention discloses a water-saving fruit tree planting irrigation device which comprises an irrigation cylinder, and water outlet holes are formed in the side wall of the irrigation cylinder; the irrigation mechanism comprises a plurality of first arc-shaped fixing plates fixedly connected to the inner wall of the irrigation cylinder, the side walls, close to each other, of the first arc-shaped fixing plates are jointly and fixedly connected with a mounting block, a water pumping cavity is formed in the mounting block, and the inner wall of the water pumping cavity is slidably connected with a magnetic sliding plug in a sealed mode; a water pumping pipe is fixedly connected to the inner wall of the water pumping cavity, the other end of the water pumping pipe penetrates through the upper end of the irrigation barrel, and a plurality of water supply holes are formed in the inner wall of the water pumping cavity. According to the device, the irrigation water amount can be automatically adjusted according to