Abstract: Of all cutting-edge technologies, one of the pioneering technology is a wireless sensor network. This technology was used in military, environmental monitoring and many. This technology was developed for real-time application in industries. When the application moves to real-time monitoring, the sensor needs to be active throughout the operation. Energy consumption is an important issue in developing the network for a real-time environment and the sensor nodes are also miniature in nature energy efficient routing is the leading task for the sensor network. The goal is to maximize the lifespan of the wireless sensor network by minimizing the consumption of energy. In this study we analyze the cluster based routing protocol such as LEACH, BCDCP, SHPER and GSTEB and the comparison of each other.