The forest has a natural healing element that makes the human body and mind healthy. In the natural environment of the forest, children play freely in body and mind. The forest play healing program was designed according to the developmental characteristics of infant. First, is forest play healing effective for improving the personality, social and emotional regulation ability of infants? The subjects of the study were 5 year olds who were financed by H kindergarten in G city S district. Personality test tool is the test tool used by Joe Yuna (2015) as six sub factors of activity, dominance, stability, impulsivity, sociality, and consideration. The children s social emotional development test instrument is the non-dependence of the teacher, the interaction with the inner control peer, the stability in the educational place, the achievement motive, and the curiosity used by Lee Hyun-Jung (2014). This program is to create an atmosphere that is unfamiliar to the forest play healing effectively before the forest play healing, because it has a tremendous excitement and anticipation effect on the forest if it carries out a decent posture, Breathing and relationship formation with friends made the children experience the relationship of tree and me, nature and me to each other, to give to each other, and to concentrate on play. In other words, it can be inferred that children play freely with their peers when they play the forest play healing program, and they have studied the contents such as play, respect for prestige, respect for life, nature search, character education, emotional regulation.