Anti-theft device for small meteorological monitor

The utility model discloses a small meteorological monitor anti-theft device which comprises a bottom plate, bolts are evenly installed on the bottom plate, protective bags are evenly installed on the periphery of the upper surface of the bottom plate, second contact pieces are fixedly installed at the top ends of the interiors of the protective bags, first contact pieces are arranged below the second contact pieces, and the first contact pieces are arranged below the first contact pieces. A mounting plate is fixedly mounted in the middle of the upper surface of the bottom plate, a positioning rod is fixedly mounted on the left side of the upper surface of the mounting plate, a motor is fixedly mounted at the top end of the positioning rod, a gear is mounted in the middle of the motor, a mounting rod is fixedly mounted on the right side of the upper surface of the mounting plate, and a guide groove is longitudinally formed in the lower side in the mounting rod. The guide groove is sleeved with a spiral spring