The invention provides a pipe body synchronous clamping device which comprises a box body, wherein two clamping mechanisms capable of moving in the opposite directions are arranged on the box body, the clamping mechanism comprises two clamping blocks, and clamping heads are respectively mounted on opposite surfaces of the two clamping blocks. The clamping device achieves driving through the pulling force of an oil cylinder, a linkage mechanism is used for transmitting power, synchronous motions of the two clamping blocks, in the opposite directions, are achieved, the purpose of clamping is achieved, not only the defects in a traditional device are overcome, requirements during the production process are met, the running time is shortened, and the productivity is improved. The pipe body synchronous clamping device has the characteristics of compact structure, low cost, stability and reliability in clamping, flexibility in operation, large pipe diameter span, shortened production period, and improved production efficiency.