The invention relates to a marine kitchen garbage treatment device. In the invention, an automatic control box controls a motor to be connected with a worm reducer so as to drive a blender in a machine body through a belt transmission device at one end of the machine body; the machine body above the blender is provided with a charging cover; the machine body is externally wrapped with an electricheat tracing belt; a discharging cover corresponding to the position of the blender is arranged on the side wall of the machine body; the machine body is internally provided with a filter screen; theinner cavity of the machine body is communicated with an induction unit through the filter screen and a three-way catalytic converter; the induction unit is connected with a suction inlet of a fan; and both the electric heat tracing belt and the fan are connected with the automatic control box. According to the invention, blending and strains are coordinated in the enclosed machine body to sufficiently digest the kitchen garbage; the mesophilic digestion environment in the machine body and the deodorization of the tail gas three-way catalytic converter are coordinately controlled to realize effective volume reduction and harmless treatment of the marine kitchen garbage; the device has the advantages of rational design and convenient and safe operation, so as to ensure that the volume reduction rate of the harmless treatment of the kitchen garbage is high and the tail gas discharge is pollution-free, therefore, the device is suitable for the marine kitchen garbage treatment.