Abstract: The complementarity of the individual advantages of the governance capacity of the supervisory board is a necessary condition for the development of mixed ownership economy. It is an important basis to judge the individual advantages of the governance capacity. Based on the idea of competitive superiority， the value parameter was determined from the most favorable perspective of the enterprise being evaluated， and the individual advantage discriminant model and the democratic discriminant model of the supervisory board’s governance capacity of mixed enterprises were put forward. At the same time， the model solution was given. A total of 10 mixed ownership enterprises in China were used as the research samples， and based on the evaluation method of the supervisory board’s governance capacity using individual advantages， a calculation example was analyzed and the countermeasures were raised for scientific evaluation.

Key words: governance capacity, mixed ownership enterprise, individual advantage, advantage evaluation, supervisory board’s evaluation