In order to increase the flexibility and efficiency of robot fish in competitions, refit tale fin and analyze two point-to-point strategy. Based on the experiments and researches on the movement of robot fish, the robot fish could be speeded up by refitting the shape of tale fin from lune to hemicycle. Combined with the different requirements and characteristics of different items of robotic fish water polo game and the performance after refitting, two point-to-point track strategy are given, and the resolution is also given for the problems in game. According to requirements, use gear method in ball-pushing competition and adopt angle amending method in single fish or multi-fish countermine.