This research deals with a modern topic about the smile and laughter of the Prophet - peace be upon him And highlights those conversations that it was reported that the Messenger of God - peace be upon him - laughed and smiled, He analyzes these conversations and shows the meaning of his smile and his description, and that they are the same meaning, and that all his laughter was in the sense of smiling, as the researcher stands to explain the motives and causes of his smile - peace be upon him -. It also shows the occasions and signs of laughter, and draws the most important issues from it, such as controls of laughter and laughter, and their judgments, and shows the importance of this act and its impact on creation and creation. The researcher concluded this study with the most important findings