The behavior of benefits expropriation by substantial shareholders is increasingly concerned by the listed companies and the government as well as the medium and small investors, while the professional background and the independent status of the independent directors make it possible to have a special supervisory role in the benefits expropriation by substantial shareholders. Deriving from the perspective of professional background of independent directors, taking the “tunneling” behavior on the part of substantial shareholders in listed company as the research object, this paper makes an exploration on the effect of technology independent directors on the benefits expropriation by substantial shareholders.The results demonstrate that listed companies hiring independent directors who possesses technical skills or has the technical background of the industry tend to effectively inhibit benefits expropriation by substantial shareholders and the compensation level of technology independent directors have incentive effects on the supervision efficiency.