Abstract-With the development of internet technologies the application of Wireless Sensor Network (WSN) has become inescapable in our physical environment. Such technology depend on the WSN to capture environmental data and transmit it through the network to the specified location or storage. The transfer and capture of data by the WSN process, there is a challenge with research to continuous maintain the working of WSN device. To save energy in WSNs data aggregation (DA) technique is used. This could cause some security problems since false may be injected during data aggregation by data aggregator. In this paper, we present a survey that focus on data aggregation in WSN, problems in security and energy constrained in sensor networks.