A wearable apparatus, which includes a positioning module, a local wireless communication module and a processor module, is disclosed. The processor module is adapted to send a request command through the local wireless communication module to the electronic apparatus for inquiring second positioning information generated by the electronic apparatus. In response to the processor module receives a valid request response comprising the second positioning information from the electronic apparatus, the processor module is further adapted to locate the wearable apparatus according to the second positioning information. In response to the processor module receives an invalid request response from the electronic apparatus, the processor module is further adapted to activate the positioning module to receive the first positioning information, and locate the wearable apparatus according to the first positioning information.