Sustainable development is becoming a very important issue in the 21st century. Facing global changes such as the global warming, global climate change, as well as other pressing issue, all spheres of economy and social life need to take part in mitigating them and preventing disasters from happening. Our article studies the role of the small business in the above processes and the place of the small business in promoting sustainable development through its actions, public and social awareness and responsibility. We show how even small and medium enterprises can become a decisive power in tackling the climate change and promoting green thinking and sustainable awareness. This can be achieved through enhancing social responsibility of business companies which can greatly contribute to supporting the Sustainable Development Goals (SDG) and promoting sustainable economic growth.