By pinpointing the object standard and environment and encouraging the administrate subject,we can transcend the limit of ethic compromise in administration activity.

John Rawls s thought of rational compromise grasps the times characteristic.

As a basic method to solve social contradictions and conflicts,rational compromise is essential in the times of peace and development.

Viewed from its origin,administrative ethic compromise has its inevitability and rationality.

Considering the wireless sensor network isn\'t uniformly distributed,and energy consumption for each node can\'t be balanced,even some nodes are captured or compromise to send forged data and so on,this paper proposed a trust model for sparse network based on beta distribution.