The invention belongs to the liquefied natural gas utilization control technical field, and concretely relates to an intelligent control device for a liquefied natural gas fishing vessel. An LNG pressure/temperature control module, an engine fuel supply monitoring module, an engine detection and safety protection module and a fishing vessel navigation module electrically connect and communicate with each other through information, and together form a detection control navigation system. An LNG storage tank, a -100 DEG C freezer, a -60 DEG C freezer, a -18 DEG C freezer and a cold seawater preparation bank electrically connect and communicate with each other through information, and are cooperated with each other to form a liquefied natural gas cold energy utilization system. All parts electrically connect with each other through information. Liquefied natural gas cold energy is utilized in an intelligent and highly efficient manner by taking economic aspects into consideration since use conditions of a liquefied natural gas fishing vessel are special. Intelligent and gradient utilization of liquefied natural gas cold energy can be effectively controlled, and economical and social effects of the liquefied natural gas fishing vessel are guaranteed. The intelligent control device has a simple structure and a user-friendly operation interface, functions safely and steadily, and is easy to popularize and apply.