The invention discloses an integrated general-purpose vertical take-off and landing aircraft based on lifting and floating force. A center
fuselage is positioned in the middle of the
front edge of a rear tandem wing; a left
fuselage and a right
fuselage are respectively positioned at wingtips at two ends of the tandem wing, and stretch out forwards; two engines are respectively mounted on the inner side of the left fuselage and the inner side of the right fuselage;
tail booms which extend backwards are respectively arranged at the rear end of the left fuselage and the rear end of the right fuselage, and each
tail boom and the longitudinal axis of a fuselage form an included angle of 15 degrees. According to the aircraft, a twin-vertical
tail layout is adopted; an elevating
rudder and steering rudders are respectively arranged on a horizontal tail and vertical tails; each undercarriage is in a front three-point manner; main undercarriages are respectively positioned at the lower part of the left fuselage and the lower part of the right fuselage; the front undercarriage is positioned at the front part of the center fuselage. The aircraft disclosed by the invention has the characteristics of extensive range of application, wide flying regions and high working efficiency; the aircraft is suitable for the fields of transportation, land surveying, resource exploration,
environmental monitoring, scientific experiments,
aviation trainings, safety patrolling, personnel rescue, express delivery, prevention and treatment for
agriculture and
forestry, culture and sports, administrative affairs, and tour and sightseeing.