Because of low temperature, deficient oxygen and bad nature condition, it is difficult to construction in high altitude. In order to solve the difficult of the electric transmission engineering construction, the holding pole with modular mast section was researched and manufactured. The mast section was designed to be multi-pieces assembly and select rational derrick material.〖JP〗 It can minimize weight of singleton to decrease labor intensity in transported and reassembled. It is also helped to mechanical transport、loading and unloading. After detection and experiment, the first holding pole was used in the No.453 and No.421 steel tower construction in the Section 10 of the Qingzang electric transmission engineering construction.