Clustering is a good method to increase WSN lifetime and particularly for smart environment. In this paper, we present fuzzy position based routing for clustered sensor network. It is very useful for the smart environment applications of wireless sensor network without GPS support. The destinations could be located with ambiguous position vectors, and the long time and energy consumption of requesting/replying for node ID in traditional routing of sensor-actor network is avoided. The results of simulation using SHAWN show that in the fuzzy position based routing, if the destination range is more precise, the average delay and energy consumption are more reduced.