Earphone plug adapter

Disclosed is an earphone plug adapter. The adapter comprises a multi-tap (20) and a patchplug (30/30a) in connection with the multi-tap (20). The multi-tap (20) comprises a base (21), a jack (27) disposed on the base, a common loop pin (23), a right sound channel pin (24), a left sound channel pin (25) and a power supply pin (26), wherein the common loop pin (23), the right sound channel pin (24), the left sound channel pin (25) and the power supply pin (26) are fixed inside the base (21) and disposed in the patchplug (27). The patchplug (30/30a) comprises a common loop end (33), a right sound channel end (34) and a left sound channel end (35). The common loop end (33), the right sound channel end (34) and the left sound channel end (35) are respectively in electric connection with the common loop pin (23), the right sound channel pin (24) and the left sound channel pin (25). By using the earphone plug adapter, a five-section earphone plug can be inserted into a three-section earphone jack or a four-section e