Congestion control is a strategy that is used to avoid network congestion and mitigate congestion. Wireless sensor networks are easy to generate congestion because of its constrained resource. Once network generates congestion, it would bring a lot of resources consumption. In wireless sensor network, sensor node usually has small memory capacity, and the buffer resources used for routing are relatively few, but real-time multimedia has a large amount of data, a large number of multimedia data transfer to sink node via multi-hops, it’s easy to generate congestion. Transmission delay generated by network congestion can’t meet real-time requirement of multimedia data. So it is necessary to use congestion control to avoid congestion in wireless sensor networks. For achieving greater energy efficient and reduce congestion. We propose cluster based congestion avoidance using EECS protocol. For selecting cluster head we use weighted clustering algorithm. Simulation result shows our proposed system provides high throughput with congestion avoidance compared with existing system.