Lat bai poker is a popular playing card game in Vietnam, attracting multiple gambling enthusiasts and gamblers. In order to legally and comfortably engage in this game, the player must be familiar with lat bai poker rules. The present paper provides the elaborated description of lat bai poker rules in detail in order to not only explain the way the game is played and won but also to make the players oriented in a specific set of rules and actions. Players who have mastered the lat bai poker rules certainly will make the right decisions in every game. It is important to know the rules to ensure that one does not make general mistakes. Researching lat bai poker rules is necessary for beginners or those who want to advance in this game in Vietnam.