Since the history of the "political struggle" in form, Often alleged to be in the interests of courtiers compete or lawful right grasping produces question, even affects the prosperity and decline national to calculate on theirs head. However, A national grasping authority machine is actually a monarch, The formation of political struggle is the result of a multi-emperor acquiesced. By the Northern Song Dynasty, Several famous political struggles all with monarch itself intention related, The royal courtier may say is shares sorrow for the monarch for the country relieves the crisis, if non-monarch's support, how do these flaunt the reform banner politics to be ideal forms? how can there be partisan. Therefore, I think that the main cause of critical political struggle, behind this manipulator is a country's crowned head.