The invention discloses an earphone plug and earphone socket connection fixation structure. The structure comprises a plug and a socket; the interior of the socket adopts a step-hole concave hole structure, and metal elastic sheets are arranged in the step hole; the plug consists of an injection molding head and an inserting column; the plug is inserted in the socket; the inserting column is connected with one end of the injection molding head; the inserting column is sleeved with metal terminal rings; the metal terminal rings are corresponding to the metal elastic sheets; inner screw threadsare formed in the front end of a through hole of the socket; outer screw threads are formed in the tail end of the inserting column of the plug; the outer screw threads are matched with the inner screw threads; and the number of the metal elastic sheets and the metal terminal rings are adjusted according to types. Improvement is performed on the basis of the existing earphone plug and earphone socket, and the outer screw threads are formed in the plug and the inner screw threads are formed in the socket, so that the plug and the socket can be connected in two forms to satisfy use requirementsin different conditions; and the earphone plug and earphone socket connection fixation structure is simple in structure, easy to operate and high in use effect.