The invention discloses a tunnel boring machine with hob actively rotating for a hard rock roadway. The tunnel boring machine comprises a machine frame provided with a crawler walking device, whereinthe machine frame is provided with a hydraulic pump station and a high-pressure abrasive jet generating system connected with the hydraulic pump station; a transmission box is fixedly arranged at oneend of the machine frame, and the transmission box is provided with two input shafts and one output shaft; the input shafts are connected with planetary deceleration mechanisms, input shafts of the planetary deceleration mechanisms are connected with cantilever drive motors, and a cantilever disc is fixed to the output shaft; four cantilevers are hinged to the cantilever disc, the cantilever discis further provided with a cantilever drive motor, and active rotating hob devices are arranged at the ends, away from the cantilever disc, of the cantilevers; and the transmission box is further provided with a rotary sealing device. According to the tunnel boring machine with the hob actively rotating for the hard rock roadway, the problems such as serious abrasion of equipment, low efficiency of rock breaking and large amount of dust under the condition that hard rock exists in the process of roadway or tunnel construction can be solved, and safe, efficient and low cost tunneling of the hard rock roadway is realized.