To enable the display of score and time corresponding to promotion rules.

Concerning the score and time display device for competition to be used for a competition for two players or two sets of players to mutually compete score, when it is judged that the count time of a timer means 19 for counting time reaches the set time of a timer time setting means 11 and the score information of a score input means does not reach a prescribed score value set by a prescribed score value setting means 8 based on the outputs of a time comparing means 20 for comparing the count value of the timer means 19 with the time set by the timer time setting means 11 and score comparing means 18 for comparing the score counted by a score counting means 17 with the prescribed score value set by the prescribed score value setting means 8, and alarm means 23 is driven to report the application of promotion rules and since it can automatically notified that the promotion rules are applied, the competition can be smoothly proceeded.