In this study, the ability of decision-making and the degree of situational recognition of a junior youth soccer player were measured continually using a test with video image.The characteristics about the ability of decision-making of junior youth soccer players were analyzed to get information which could be utilized for actual instruction.The test was carried out to 27 junior youth soccer players for four times in five month training session.As a result, the following was suggested.(1) It was revealed that junior youth soccer players mainly improved the ability of situation recognition among the decision-making ability factors by training.(2) It was guessed that junior youth soccer players had insufficient of experience to choose information required in order to make a suitable decision-making and that it is difficult for them to process much information quickly and appropriately.(3) It was considered that the superiority or inferiority of the ability of situational recognition of junior youth soccer players was influenced by whether short-distance area can recognize correctly or not.