A hot swap fan tray with fan guard is disclosed. The present invention includes a frame, at least one fan and at least one fan guard. The frame includes a plurality of first holes. The fan includes a plurality of second holes. The fan guard further includes a plane and at least one protrusive terminal. The protrusive terminal projects from the plane and includes at least one bend. During the protrusive terminal passes through the first hole and the second hole, the bend changes shape and then returns original shape elastically, thereby the bend attaching said fan and said fan guard to said frame.