Delegation by the agent has two main types: 1-delegation to the third party, so that in time of delegation to the agent also is give to him express or implicit permission to could delegate to another for the implementation of the subject matter of agency. in this case, the first agent do not deleted from the relationship and as occasion, death or incapacity of him do not effect on the sub agency.2-conferment of agency that ended to transferring of agency to third party and as a result, the first agent deleted from relationship and death or incapacity of him would not effect on sub agency. The present article, allocated to the first type. The authors would try in this article with comparative view on Islamic law, statute, and England law, would study and analyze the concept, bases and nature of delegation to the third party, position of sub agent in relationship with first and sub agent, its results and extents of the powers of agents.