A changeable model flight toy which can simulate the takeoff and landing attitudes and flight attitudes at low cost in accordance with different types of airplanes is provided. A plurality of airplane bodies having different outer appearance forms which can be maintained for a long period of time are interchangeably mounted on an inner sleeve. A changeable model flight toy 100 characterized by a flight operation unit 120 which is incorporated within airplane bodies 110, 210 is disclosed. A takeoff and landing control panel 130 hoists and lowers the flight operation unit 120 while bearing the unit 120. The airplane body 110, 210 comprises a nose side body 110A, 210A including the main wing 112, 212 and a tail assembly side body 110B, 210B including the tail assembly 115, 215. The nose side body 110A, 210A and the tail assembly side body 110B, 210B of the airplane body 110, 210 are respectively detachably fitted from the nose side position and the tail assembly side position of the inner sleeve 140 which incorporates the flight operation unit 120 and surrounds it.