Since it is difficult to set up the network in existing coke oven to measure the temperature and the cost is relatively high, the ultralow power wireless sensor network for temperature measurement of coke oven is designed in this paper. Selforganizing network with a MESH structure for field environments are constituted of the protocols of a physical layer, data link layer, network layer, application layer, locationbased routing protocol and the ultralow power operation mode. The system has some advantages such as flexible, accurate, low cost and long survival.