Wireless sensor network is autonomous and infrastructure less network. Now-a-days, different types of WSN applications are developed. Secure transmission of information in WSN is an important issue. In this paper, the authors introduce new approach for WSN security, they propose Secure Energy Efficient Routing (SEER) schema that consider cost of providing security and effects on energy efficiency. Secrete sharing method used for providing security. In this method information is divided into multiple shares and sends via multiple disjoint paths from source to destination at different point of time. At the destination end the original information reconstructed by combining the shares received via different paths at different point of time.