The invention relates to a neutral optical fiber connector. The neutral optical fiber connector comprises a plug housing, a socket housing, two neutral optical fiber terminal contact members and an outer locking ring. The first neutral optical fiber terminal contact member is tightly clamped in the plug housing in a penetrating manner. The second neutral optical fiber terminal contact member is tightly clamped in the socket housing in a penetrating manner. The plug housing is connected with the socket housing in a locked manner by means of the outer locking ring so as to enable the two neutral optical fiber terminal contact members to be in an elastic abutted connection manner. Optical fiber insertion cores of the optical fiber terminal contact members are of a cylinder neutral structure, rotating installation is not influenced, and the clamping can be realized by selecting a reed pawl or a clamping nail cooperating with a transverse L-shaped groove; in an inserting process, the optical fiber insertion cores are elastically abutted against each other and totally retracts into aligning sleeves on two sides, the connection performance is stable, aligned insertion is not needed, the flexibility of the insertion is high, the plug and the socket are not distinguished, the compatibility is high, and the production technology complexity and the manufacturing and usage cost are lowered.