The invention discloses a full-metal soluble bridge plug. The full-metal soluble bridge plug comprises a seat sealing cylinder (1), an upper cone body (2) and a sealing cylinder (3), a lower cone body(4), a lower joint (5), a release rod (7), a conversion joint (8) and a seat sealing rod (9), the lower end of the seat sealing cylinder (1) is attached to the upper end surface of the upper cone body (2), the upper end of the seat sealing cylinder (1) is connected with an externally-arranged seat sealing tool, in the seat sealing barrel (1), the upper end of the conversion joint (8) is connectedwith the lower end of the seat sealing rod (9), the lower end of the conversion joint (8) is connected with the upper end of the releasing rod (7), the lower joint (5) is connected with the releasing rod (7) through threads, the lower joint (5) is connected with the lower cone body (4) through threads, one end of the lower cone body (4) is matched with one end of the sealing cylinder (3) throughthorn teeth, and the other end of the sealing cylinder (3) is matched with the upper cone body (2) through the thorn teeth. The full-metal soluble bridge plug has the characteristics of reliable anchoring, reliable pressure bearing, complete dissolution and the like.