The aim of this study is to examine preschool teachers experience and thoughts about stress in preschool. The study is based on a sociocultural theory, were the interaction and communication has a central role. We wanted to enrich our qualitative study by finding out how preschool teachers thinks children and themselves get affected by stress and which strategies and methods they use to prevent stress in the preschool. The questions asked in this study are: what causes stress in children and the pedagogues? How does stress affect the children according to the pedagogues? How does the pedagogues get affected by stress? And what does the pedagogues do to prevent stress in the preschool? This questions were answered by using qualitative interviews on six preschool teachers from two preschools in Stockholm. The result indicate that all the participants are experiencing stress on an almost a daily basis. Some of the causes of stress where: the size of the child groups, the sound levels and lack of time. The results of how children gets affected according to the pedagogues indicate that they: have difficulties with concentration, some get outraged, speeded and some of the children's reaction is to get silent. The pedagogues stress is expressed by: getting irritated, feeling fatigue, having symptoms as palpitations and headache. When it comes to which strategies and methods they use to prevent and reduce the stress levels they: reorganize activities, groups and routines and also the environment. The communication between the colleagues is also an important factor.