A wearable device includes a casing member, a lifting assembly, an elastic element, and a pressing member. The casing member has a supporting portion. The lifting assembly is housed in the casing member and is liftable above the casing member. The elastic element is connected to the casing member and the lifting assembly. The pressing member faces toward the supporting portion. The pressing member is movably connected to the lifting assembly and is configured to move along with the lifting assembly, whereby the temple is capable of being clamped between the pressing member and the supporting portion.