The invention discloses an L-shaped lazy arm liferaft crane. According to the L-shaped lazy arm liferaft crane, two guide pulleys are arranged at a transverse arm of an L-shaped steel lazy arm, a fixing lug ring is arranged at the tail end of a longitudinal arm of the L-shaped steel lazy arm, and the L-shaped steel lazy arm is connected with a square steel base by a shaft pin and a fixing lug plate. The L-shaped steel lazy arm can rotate in the vertical direction and around the shaft pin. A triangular support is arranged at the square base and is used for fixing a winch device. The winch rotates by a hand crank. A remote control device is arranged, and is connected with the winch by a steel wire. The winch and the guide pulleys are penetrated and wound by a sliding. An automatic releasinghook is arranged at the tail end of the sliding. According to the liferaft crane, operation radius of a deck is reduced, the area utilization rate of the deck is improved, the operation time is shortened, and more time is bought to escape and evacuate. Compared with a manual rotating type single-arm liferaft crane, a set of manual rotating device is omitted, self-weight and structural support weight are reduced, and therefore the cargo loading capacity of a mother ship is greatly improved.