The invention provides a small-size fruit encasing and sealing machine. The small-size fruit encasing and sealing machine comprises a rack, a U-shaped claw clamping mechanism, a double-stroke suction cup encasing mechanism, a box cover feeding mechanism, a double-conveying-belt material conveying mechanism and a sealing machine core. The double-conveying-belt material conveying mechanism comprises an encasing synchronous belt and a sealing synchronous belt which are arranged perpendicularly. The U-shaped claw clamping mechanism comprises a sliding platform air cylinder and a U-shaped claw main body. The U-shaped claw main body is slidably installed on the sliding platform air cylinder. The initial position of the sliding platform air cylinder is a clamping station. The tail position of the sliding platform air cylinder is an encasing station. The double-stroke suction cup encasing mechanism is located in the encasing station. The encasing station is located in the position close to the upper portion of an outlet of the encasing synchronous belt. The box cover feeding mechanism is located in the position above an inlet of the sealing synchronous belt. The sealing machine core is installed in the position, in the middle of the sealing synchronous belt, of the rack. According to the small-size fruit encasing and sealing machine provided by the invention, the working efficiency is high, and the labor cost is reduced.