The invention discloses the grape dashing enzyme ramification dealing with the blood platelet assembling and the thrombin active ability and the producing process belonging to the domain of the gene engineering and the producing art of the biology dissolving bolt medicament. The nucleotide acid serial of the grape dashing enzyme ramification restraining the blood platelet assembling and the thrombin active ability is disclosed. The producing process fuses the RGD series, the C end series of the hirudin and the constructed low antigen and high active ability SAK breaking body gene using the gene recombining technology outer the body, at the same time, the Xa gene incising location point and the flexible connecting arm and it's C end amino acid is decorated, the another amino acid is appended. The fusing albumen expressing carrier is constructed to gain the efficient expressed recombining SAK ramification using the double enzyme chipping and the PCR appraising alkalescence of the constructed breaking body. The ramification has the function of restraining the blood platelet assembling and interdicting the thrombin active ability and establishes the base of developing the new generation dissolving bolt medication. So the applied range of the new SAK ramification is expanded largely.