Meanwhile, Korea has continuously promote economic growth strategy large enterprise-oriented under stateled. As a result, the economy has grown remarkably. But domestic industry structure is unbalanced because of the proportion of medium-sized enterprises is low. To growth of small enterprises to mid-sized enterprises, balanced development of the corporate ecosystem is necessary. For this purpose, it is necessary to continue the growth of small enterprises to mid-sized enterprises. But most companies do not escape stagnation phenomenon in the growth phase while experiencing growing pains. In this paper, we will study the concept of growing pains and stagnation cause of domestic small and medium sized enterprises. Through this, classifying small and medium sized enterprises growing step and Find out the factors that lead to growing pains at each step. To overcome growing pain, we suggest plan for conquest.