The present invention relates to a fishing simulation method, a fishing simulation execution method, and a fishing simulator, and more specifically, to a fishing simulation method, a fishing simulation execution method, and a fishing simulator, in which a fishing activity procedure of detecting a fish school, gathering fish, and catching the fish can be realized in a three-dimensional virtual space of a computer, and a fishery environment and fishing activity simulated in the computer virtual space comes to be similar to a real fishery environment and fishing activity by simulating the behavior of the fish school, including an avoidance behavior of fish entities forming the fish school, responding to the movement of a fishing boat and a fishing gear, thereby enhancing learning effects on the fishery environment and the fishing activity.