Abstract：Alarm-calling behavior is important in the social communication of nonhuman primates. Based on related studies, the paper introduced two systems (functional reference system and urgency reference system) and alarming functions of the calls, and reviewed the developmental process of production, comprehension and usage of alarm calls. Meanwhile, the influential factors including predators'hunting techniques, individual differences and learning were discussed. In the preliminary study of Sichuan golden monkeys'alarm calls, it was found that different levels of dangerous information embedded in males, females, and infants'calls. Future researches on more species will help to understand more about alarm calls of nonhuman primates.