The invention discloses a take-off and landing device for a small-sized unmanned aerial vehicle. The take-off and landing device for the small-sized unmanned aerial vehicle comprises an external side plate (1), an internal side plate (2), a rear wheel (6), a front wheel (5), a front wheel steering engine (12) and a wheel axle and wheel fork component. The impact on the rear wheel, which is used as a bearing wheel, at the moment of landing is transmitted to a vehicle main structure after passing through landing gear double side plates and a vertical tail connecting piece in sequence so that good shock absorbing effect is realized. Each accessory between the external side plate and the internal side plate is also used as a connecting piece between the steering engine and the front wheel while being used for providing supporting forces to the double side plates; therefore, the effective utilization rate of the structural parts is increased, the additional connecting pieces is reduced in use and a weight reducing effect is also realized. And meanwhile, as lightening holes are punched in strength-rich parts of the rear parts of the side plates, the weight of the structure is effectively reduced. Through adoption of the design method of the wheel axle and wheel fork component, the invention is advantaged in that good strength and good manufacturability are realized, the number of the connecting pieces is greatly reduced and the weight of the take-off and landing wheel fork component is reduced.