The invention relates to an air bag collecting and releasing device for an inflating type trestle. Automatic air bag collecting and releasing control can be achieved, and manual operation of manual work is avoided. The air bag collecting and releasing device comprises an air bag fixing device, an opposite opening door panel and a power unit. The power unit is used for driving the opposite openingdoor panel to be opened or closed. An air bag is fixed to the position below an edge trestle joint of the inflating type trestle through the air bag fixing device, the collecting and releasing direction of the air bag is the longitudinal direction, and one longitudinal end of the air bag is fixedly connected with the bottom face of the edge trestle joint through the air bag fixing device. The opposite opening door panel is arranged at the other longitudinal end of the air bag. When the opposite opening door panel is in a closed state, the opposite opening door panel closes a longitudinal expanding channel of the air bag, and the air bag is recycled into the area between the bottom face of the edge trestle joint and the opposite opening door panel. When the opposite opening door panel is inan opened state, the longitudinal expanding channel of the air bag is opened, and the air bag can finish the expanding action.