This study clarified the relation of win and loss between the reception frequency of Libero and the result of receiving the ball which returned by Libero. This study also compared the success rate of attack assemblies and attacks of setting; - performed by Libero - performed by other players We have pursued possibility of Libero to have the function as the substitute of the setter, aimed to gain references for future volleyball guidance. Here are the results; 1） Reception frequency In the winning set, there was a significant difference in attack reception (ATR). When the blocking is efficiently functioning, Libero has more opportunity to receive attacks. This leads to counterattack and contribute to win a set. 2） The result of receiving the ball returned by Libero In the winning set, there were significant differences in serve reception (SR), attack reception (ATR), and block follow reception (BFR). Number of attack reception which enable attacking would be an important factor for win or loss of the game. 3） Success rate of attack assemblies and attacks of overhand setting In the winning set, the success rate of attack assemblies and attacks of overhand setting by Libero shows higher numerical value than other players except setter. Active performance on overhand setting by Libero enables other players to prepare attacking more earlier; numbers of plyaers which participating attacking increased. This may indicate that overhand setting by Libero is second best which follows setter and is most likely to have the substitutional role of the setter.