A network game system having a role period providing platform and a method for providing said network game role period, the method is that: the server authorizes the game player to obtain a predetermined right through a predetermined mode, and accepts the application of the player having said predetermined right to execute said right, whereupon the server terminal forms in the network game environment a non-continuous role corresponding to said predetermined right; in a predetermined period, the server terminal assigns a balance to a non-continuous role or the continuous role of a player having rights according to a predetermined feedback mechanism corresponding to the non-continuous role, and the server terminal cuts off the control of the predetermined right player terminal with the non-continuous role as soon as the predetermined period ends.
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