In contemporary societies, middle class is the social relation stabilizer. In Moldova, this class is at the initial stage of development. A valuable means of development is the establishment of SMEs. The core of middle class is represented by these business entrepreneurs. SMEs constitute a separate social group of entrepreneurs and employees with specific features. Currently in our country, 49 800 SMEs operate. They represent more than 97% of all businesses that employ more than half of all employees. The article notes that the revenues of SMEs from sales also rose insignificantly. The author states that in comparison with highly developed countries, Moldova lags behind in this respect. The surest way of developing the middle class is to contribute to the recovery of this sector development, to improve the quality of production and services.