Communication method, apparatus and system for wearable device are provided in the disclosure, which belong to the technical field of application of electronic technology. The method may comprise: acquiring (201) a motion state parameter of a wearable device; determining (202) whether the wearable device is in a fallen state based on the motion state parameter; and sending (203) information about falling to a terminal to instruct the terminal to send out an alerting signal when the wearable device is in the fallen state. In the present disclosure, by sending the information about falling to the terminal, the communication content between the wearable device and the terminal can be expanded. The present disclosure may be applied to the communication of the wearable device.