The invention relates to the technical field of air film building anchoring equipment, in particular to an air film building anchoring device which comprises an anchoring plate and a pressure connecting component. The anchoring plate is used for being horizontally arranged on the ground. The pressure connecting component is connected to the anchoring plate. The space between the anchoring plate and the pressure connecting component is used for fixing an air film body. Main parts of the air film building anchoring device are all precast in factories, the site workload is small, the mounting speed is high, and the working period is short; when an air film building is transferred, the air film anchoring device can be completely dismantled and moved and can be repeatedly utilized, the relocation cost can be lowered, building waste is reduced, and the air film building anchoring device has no harm to the environment and is more environmentally friendly; a process is simple and reliable, and the construction efficiency is high; and anchoring point positioning is accurate, and air film body connection is more facilitated.