An UAV may include a fuselage body, a landing gear on the fuselage body; a top lens structure movably disposed on the fuselage body; a bottom lens structure at a bottom of the fuselage body, the bottom lens structure being opposite to the top lens structure; and a driver on the fuselage body, the driver being transmission connected to the landing gear and the top lens structure. The driver may be configured to drive the landing gear and the top lens structure to be lowered or raised synchronously so that a bottom end of the landing gear protrudes from a bottom end of the bottom lens structure while the top lens structure retracts into the fuselage body or the landing gear is located outside a field of view of the bottom lens structure while the top lens structure protrudes at least partially over a top of the fuselage body.