Abstract: The test temperature requirements of the tensile test standards for metallic materical welded joints at home and abroad were compared and analyzed. Transverse tensile tests of Q355B steel welded joints were separately carried out at 10, 23 and 35 ℃. The results show that under the condition of 10-35 ℃, the influence on the temperature on the tensile strength of Q355B steel welded joints was not scgnificant. The revision suggestions of GB/T 2651—2008 were put forward.