The invention discloses a device for collecting and treating garden leaves, which comprises a collection box for broken leaves, a second telescopic device, a universal wheel, a leaf suction cover, a slant plate, a cylinder and a leaf suction pipe. The directional wheel realizes the free movement of the equipment. By setting the suction vane cover, the suction surface of the suction vane pipe is larger, which improves the effect and efficiency of the suction vane, and improves the practicability of the equipment. The slant plate is used to avoid suction of the suction vane The leaves in the pipe enter the exhaust fan without affecting the suction of the exhaust fan. The cylinder is used to drive the pressing plate to move downward in the broken leaf collection box, and then the broken leaves in the broken leaf collection box are compacted. By setting the second telescopic device for Adjust the distance between the bottom of the shell and the ground, and then realize the adjustment of the distance between the suction leaf cover and the ground, thereby realizing the adjustment of the suction force of the leaf suction pipe on the leaves on the ground, and improving the effect of the leaf suction pipe on the leaves. Improve the practicality of the equipment.