The present disclosure provides a charging case for at least one earphone. Each of the at least one earphone may include a core module and a hook structure connected to the core module. The charging case may include at least one profiling groove configured to accommodate one of the at least one earphone. Each of the at least one profiling groove may include a first profiling groove region corresponding to the core module and a second profiling groove region corresponding to the hook structure. A projection of the first profiling groove region and a projection of the second profiling groove region in the first reference direction overlap, and a projection of the first profiling groove region and a projection of the second profiling groove region in the second reference direction overlap. The first reference direction may be perpendicular to the second reference direction. With such arrangement, the charging case in the present disclosure can have a relatively small volume.