Kindergarten is a place where a child, in addition to home, spends most of his time. The child should be provided with a healthy and safe environment in which to grow up. A very important factor of healthy social, emotional and cognitive development is the cooperation of parents and educators. Parents and educators have a key role to play in a child's upbringing, and their cooperation should be based on interaction and participation. It is very important how parents and the educational institution cooperate. The paper describes some important items of cooperation, such as modalities of cooperation and its obstacles, advantages and disadvantages, distinguishing between traditional and modern. In order to achieve the main goal of cooperation, which is the welfare of the child, cooperation should be mutual or two-way. Parents and educators for cooperation should master certain competencies, participate in seminars, schools for parents, and be invited and involved in all forms of educational program in such a way that the educational institution provides them with various forms of participation in the educational program, such as arranging education programs and work organization. Nowadays, parents are required to do much more than before, parents are more involved in the work and program of the kindergarten, and are considered equal experts, because they are the primary educators of their child, everything starts from them, ie the basis of child development and the upbringing comes from the parental home. Achieving good cooperation requires good, quality and two-way communication, commitment, expansion of knowledge, mutual acquaintance, understanding. This can be achieved in different modalities of cooperation, whether it is a traditional or modern form, for example an individual conversation, a parent meeting, communication with the help of technology.