The invention discloses a titanium alloy sealing head which comprises a sealing head body, wherein a feeding hole is formed in one side of the upper part the sealing head body; a cleaning fluid inlet is formed in the other side of the upper part of the sealing head body; a protective layer is arranged on the outer surface of the sealing head body; a slipping layer is arranged on the inner surface of the sealing head body; a circle of mounting boss is formed on the outer edge of the sealing head body and forms a whole body with the sealing head body; a plurality of mounting holes are uniformly formed in the mounting boss; and a circle of elastic sealing ring is arranged below the mounting boss. The invention mainly solves the problem about sealing performance and corrosion resistance of the sealing head. Through reasonable structural arrangement, the airtightness of the sealing head is improved to enable the sealing head to keep excellent airtightness during the mounting, dismantling and shaking processes. Meanwhile, with the arrangement of the protective layer and the slipping layer, the corrosion resistance of the sealing head is improved, and the using period of the sealing head is prolonged; and as the sealing head is manufactured by adopting a specially manufactured titanium alloy material, the cardinal numbers of the corrosion resistance and the structure strength of the sealing head are further increased, and the sealing head is more durable in use.