Disclosed is a transfer mechanism for a multiplied-speed chain conveying line, the transfer mechanism comprising a lifting and translation mechanism (1) and a blocking mechanism (2), wherein the blocking mechanism (2) is disposed on the outer side of the lifting and translation mechanism (1); the lifting and translation mechanism (1) comprises a bracket (3), a guide rail (4), a multiplied-speed chain (5), a translation device (6) and a first gas cylinder (7). The bracket (3) is disposed under the guide rail (4) and the translation device (6), the first gas cylinder (7) is disposed on the bracket (3), the multiplied-speed chain (5) is disposed within the guide rail (4), and the first gas cylinder is connected to the translation device (6). The blocking mechanism comprises a blocking block (13) and a second gas cylinder (14). The second gas cylinder (14) is connected to the blocking block (13), and the second gas cylinder (14) is fixedly connected to the guide rail (4) of the lifting and translation mechanism (1). The transfer mechanism realizes the entering and leaving of a tooling plate in two directions, thereby improving the space utilization and conveying efficiency.