The invention discloses a multi-orifice-combined gap passing capacity enhanced air foot, belongs to the field of air suspending technologies and zero-gravity environment simulation, and solves the problem of poor gap passing capacity of traditional air feet due to the fact that high-pressure air flowing out of orifices is directly discharged from gaps when the orifices of the traditional air feet pass the gaps of assembled air suspending platforms. The air foot comprises a substrate, an air suspending cover plate and seal rings; the substrate and the air suspending cover plate are oppositely buckled together; the air suspending cover plate is located above the substrate; the seal rings are arranged between the substrate and the air suspending cover plate; a circular air cavity is formed in the upper surface of the substrate; M orifice air cavities are uniformly formed inside the circular air cavity in the circumferential direction of the circular air cavity; the depth of each orifice air cavity is larger than or equal to that of a cavity body of the circular air cavity; the caliber of each orifice air cavity is larger than the width of the cavity body of the circular air cavity; and N orifices are evenly distributed in the circumferential direction of each orifice air cavity. The air foot is mainly matched with an air suspending platform for use.