The invention relates to a davit carrying moving-lifting type small boat retracting-releasing device. A three-stage telescopic rail part is arranged on a
deck of a mother ship, and the third-stage telescopic rail part comprises a fixed rail fixed to the
deck, a middle rail which can extend outside the
hull of the mother ship or retract inside the
hull of the mother ship and a last-stage rail; a telescopic power part is arranged on the side face of the fixed rail, and a lifting power part and a lifting and transmitting part are arranged above the last-stage rail; the lifting power part drives an active lifting
sprocket wheel to draw a chain from a chain storage box or put a chain in the chain storage box through a
coupling, the movement direction of the chain is changed into vertical movement through a transition
sprocket wheel B on a corner
sprocket wheel
assembly; and a davit part is connected to the
tail end of the chain through a chain
shackle assembly. The davit carrying moving-lifting type small boat retracting-releasing device is simple and reasonable in structure, and the safety and reliability of the device is further improved; a small boat is in a state of horizontal moving in the process of retracting and releasing the small boat, the small boat floats on the surface of water and is automatically separated from the davit after the small boat enters the water, and thecomfort of passengers of the small boat and the safety of the passengers and materials in the retracting and releasing process are improved.