In recent decades,a lot of research about stress has been made and much achievement has been made, but there are few reviews about stress. Stress can be classified into two categories:word stress and sentence stress. In word stress, some simple and practical rules can be summarized:principle of strong cluster and weak cluster, principle of affix, primary stress rules and alternat?ing stress rules in rhythm phonology, and in sentence stress, the principle of stressing the notional words and use reductions in functional words, principle of the stress in the right , phrase stress rule and compound stress rule in TG theory. Hoping that it can let the readers have a more comprehensive understanding towards discovered stress rules.