The invention discloses a garbage collection and treatment device special for landscaping. The garbage collection and treatment device comprises a garbage crushing box, a fixed seat and a garbage storage cover. The garbage crushing box is internally fixedly connected with a fixing rod fixedly connected with a crushing motor, and the bottom of the crushing motor is connected with a rotary shaft. The surface of the rotary shaft is fixedly connected with a crushing rod fixedly connected with crushing blades. Threads are evenly distributed on the surface of the rotary shaft, and the surface of therotary shaft is sleeved with a moving piece fixedly connected with a receiving plate. The fixed seat is fixedly connected to the bottom of the garbage crushing box, and a sliding plate is slidably connected into the fixed seat. According to the garbage collection and treatment device, the disperse degree of garbage is decreased, the crushing efficiency of the garbage is improved, and garbage powder is conveniently discharged; the drying degree of the garbage is increased, and garbage crushing is facilitated; and the damping performance is high, excessive vibration of the garbage in the crushing process is avoided, and swing or even rollover of the garbage crushing box is avoided.