The invention relates to a hot-rolling sword blank manufacturing device and a hot-rolling manufacturing method thereof, in particular to a sword blank hot-rolling former and a hot-rolling manufacturing method using the same. The sword blank hot-rolling former comprises a feed mechanism, a high-frequency heating system, and a rolling machine. The high-frequency heating system is disposed between the feed mechanism and the rolling machine and comprises an induction coil pipe, a cooling water circuit system, a high-temperature cement block, a transformer, and an ultrasonic frequency induction heating device connected with the transformer. The high-temperature cement block is provided with a heating passage. A main part of the induction coil pipe is embedded into the high-temperature cement block. The induction coil pipe extends out of two ends of metal pipes in the high-temperature cement block and respectively electrically connected with the transformer; the interiors of hollow pipes of the metal pipes at two ends are further communicated with the cooling water circuit system. High-temperature cement material for the high-temperature cement block is made from cement, water, tricalcium aluminate, polyester fiber, retarder, and polypropylene fiber. The sword blank hot-rolling former heats up by high frequency, is high in production efficiency and good in safety, causes low pollution, and is good in machining quality.