The invention relates to an installation device for an outdoor shooting camera and an application method thereof. The installation device for the outdoor shooting camera comprises an inserting column,wherein a sealing cap is detachably arranged at the upper end of the inserting column; a connecting rotary plate is fixedly arranged at the position, close to the sealing cap, of the outer surface ofthe inserting column; a connecting column is fixedly arranged at the other end of the connecting rotary plate and rotates through the connecting rotary plate; an antitheft box is fixedly arranged onthe outer surface of the upper end of the connecting column; an outlet hole is formed in the position, close to the lower end, of the outer surface of the inserting column; an opening in the upper endof the inserting column communicates with the outlet hole; and the lower end of the inserting column is a sealed end. The installation device for the outdoor shooting camera has the characteristics of simplicity and quickness in installation, high corrosion resistance, durability, good antitheft effect and the like, has good practicability and durability, is applied to biological diversity monitoring, environmental indicator organism monitoring, biological diversity protection research and scientific research markets, and has a wide market prospect.