We have developed “TOUCH VOLLEY”. It is a tactical support system for volleyball by using two laptop personal computers connected by wireless LAN. Each computer can implement by using a touch sensor function on display. The developed system is consisted of 3 functions: Data input, Tactical support and Data analysis. In the Data input function, the user can input a trajectory of ball as game data by touching display directly. In this paper, we describe Tactical support function and Data analysis function. The Tactical support func tion is run during the game. This function receives a game data from connected Data input computer by wireless LAN. The team coach can see the direction chart on spike (or service) trajectory of each player immediately. Therefore, the player can get advice about their weak point or rival team. After the game, the user can analyze the game data in detail by using Data Analysis function. The Data analysis function shows us each player's skill with using tables and diagram of spike (or service) trajectory. The members can research on their team and rival team. By using proposed system, the team coach can advise immediately during the game. After the game, the head coach can plan the training menu by using analyzed data.