The invention discloses a maritime intelligent lifesaving system. The maritime intelligent lifesaving system comprises a drone and a lifesaving device,wherein the drone is used for searching for a to-be-rescued person and obtaining the position of the to-be-rescued person; the drone comprises an image acquisition module, a positioning module I, and a signal transmitting module, wherein the image acquisition module isused for collecting environmental information, the positioning module I is used for locating the position of the drone,and a signal transmitting module; the lifesaving device comprises a lifesaving device housing, a power source module, a signal receiving module, a positioning module II, an inertial navigation module, a control module, and a power module, wherein the power source module is located inside the lifesaving device housing, the signal receiving module is in communication with the signal transmitting module, and the positioning module II, the inertial navigation module, the control module, and the power module are used for positioning the position of the lifesaving device; the lifesaving device housing is overall U-shaped, and the head of the lifesaving deviceis provided with a duckbilled assembly; the inertial navigation module comprises an MEMS gyro, a triaxial accelerometer, and a geomagnetic sensor. The marine intelligent life-saving system is high inintelligence; the flow resistance of the life-saving device is small, and the running speed is fast; inertial navigation technology is adopted, the marine intelligent life-saving system is not affected by wind and waves, and the application prospect is good.