As the years go by, different pathologies, syndromes and disorders develop, which affect the development of learning, language, behavior, physical, social and motor development of our children, one of these is willimas syndrome. In this book we can find many characteristic descriptions that help us to identify the person who suffers from the (SW), it also gives us some strategies that we can implement to improve their child development through early stimulation. It also explains the fundamental reasons why some people develop this syndrome. that is why it is of utmost importance to have knowledge of the things that happen in our daily environment and thus be able to be a help for those who need it.