A frequency hopping communication recovering method includes: communicating a first device and a second device within multiple frequency channels respectively in multiple time slots to perform a frequency hopping communication; in a communication recovery operation, configuring the first device to be operated and locked within a recovery frequency channel in the frequency channels; and in the communication recovery operation, configuring the second device to scan within the frequency channels respectively in multiple recovery time slots. The time slots have a first length, and the recovery time slots have a second length shorter than the first length.