Vietnam's small and medium-sized enterprises are the dominant type of enterprises and play an important role in creating jobs, increasing income for workers, helping mobilizing social resources for development investment, hunger eradication and poverty alleviation ... Currently, small and medium-sized enterprises account for about 98% of the total number of over 700,000 businesses operating in the country. However, with small scale, limited financial resources, technology, small and medium enterprises are facing many difficulties when participating in the increasingly competitive playground. The Law on Supporting Small and Medium-sized Enterprises, which came into effect in 2018, has created an important legal corridor in supporting small and medium-sized enterprises, in which technology transfer services play a supporting role for businesses. Small and medium enterprises improve technology capacity, contribute to improve competitiveness for small and medium enterprises. On that basis, the article studies a number of technology transfer models of some countries, from which to draw lessons and recommendations for Vietnam.