The invention discloses a quick construction method for a segment No.0 of a continuous beam, which includes: A10, constructing an assembly foundation along a bridge beside a main pier, wherein the assembly foundation is used for assembling an integral lifting platform for reinforced forms of the segment No.0; A20, synchronously constructing the integral lifting platform for the reinforced forms of the segment No.0 during construction of the main pier, wherein the integral lifting platform for the reinforced forms of the segment No.0 is complete before the main pier is complete; A30, lifting the integral lifting platform for the reinforced forms of the segment No.0 to the top of the main pier, and performing girder concreting with the segment No.0 and performing tensioning and grouting for a bridge body. By the method, the integral lifting platform for the reinforced forms of the segment No.0 is assembled and the forms are mounted and tied with rebars when construction of the main pier cap and a pier body starts, no interference with construction of the body of the main pier exists, and accordingly, construction period can be shortened greatly.