This paper studies the hydrogen embrittlement of ultra-high-strength steel 30Si2MnCrMoVE in nitrogen and methanol nitrogen-based atmosphere heat treated with the sealing box multi-purpose furnace in heat treatment production line. The results show that the mechanical properties, fracture toughness,microstructure and fracture morphology in nitrogen-based atmosphere heat treated with H2≤3% nitrogen are the same as the ordinary heat treatment. No hydrogen embrittlement tendency has been found. Although the nitrogen-based atmosphere heat treatment improved the apparent quality,the 30Si2MnCrMoVE stil exist decarburization phenomenon.