The air conditioning circulation system for ocean-going fishing vessels comprises a main control unit. The main control unit is electrically connected to a hull air conditioning control unit. The hull air conditioning control unit is electrically connected to a monitoring module. The monitoring module is electrically connected to a water pump sensor. The monitoring module is electrically connected to a warning unit. The monitoring module is electrically connected to a fault diagnosis unit. The fault diagnosis unit is electrically connected to a receiving module.
    The main control unit is electrically connected to a humidity regulation unit and a temperature control unit. The temperature control unit is electrically connected to a settings module. The monitoring module is electrically connected to a compressor sensor, condenser sensor, heat exchanger sensor, evaporator sensor, fan sensor, and air conditioning power monitoring module.
    The air conditioning power monitoring module is electrically connected to the power supply server. The temperature control unit is electrically connected to the first feedback module. The first feedback module is electrically connected to temperature sensor one, temperature sensor two, and temperature sensor N. The temperature control unit is electrically connected to a temperature increase control module, a temperature setting access module, and a temperature decrease control module. The temperature decrease control module is electrically connected to a temperature control feedback module. The temperature control feedback module is electrically connected to a signal receiver. The humidity regulation unit is electrically connected to a second feedback module. The second feedback module is electrically connected to humidity sensor one, humidity sensor two, and humidity sensor N. The humidity regulation unit is electrically connected to a humidification module, a humidity setting interface module, and a dehumidification module. The setting module is electrically connected to a temperature setting module and a temperature setting module. The temperature setting module is electrically connected to a first feedback module. The first feedback module is electrically connected to a temperature self-regulation module. The temperature setting module is electrically connected to a second feedback module. The second feedback module is electrically connected to a humidity self-regulation module. The vessel's marine air conditioning circulation system employs a monitoring module to oversee the air conditioning circulation system within the hull. An air conditioning power monitoring module monitors the air conditioning power supply. Should any fault occur, the warning unit issues an alert to the vessel. Concurrently, the fault diagnosis unit enables troubleshooting of the affected vessel section, thereby facilitating rapid identification of the fault location.