In 2005 Niu Lei became one of the list arbitrators of CIETAC and CMAC.Up to now he has dealt with several dozens of cases as the presiding arbitrator, sole arbitrator, or co-arbitrator.

• 2005年起受聘为中国国际经济贸易仲裁委员会和中国海事仲裁委员会的仲裁员，曾作为首席仲裁员、独任仲裁员或仲裁员办理案件数十件。