The utility model provides a rock support structure comprising steel fibrous shotcrete and six concrete filled bands. The concrete filled bands are respectively disposed in the middles of two sides of a tunnel and at angles of 45 degrees and minus 45 degrees of the two sides of the tunnel, and each concrete filled band is composed of large deformed concrete precast blocks. When surrounding rock of the tunnel generates large deformation, the concrete filled bands can keep certain resistance under the condition of self large deformation, so that stability of the surrounding rock is guaranteed. The set number and positions of the concrete filled bands can be adjusted according to specific situations. The rock support structure is convenient to implement, can keep certain resistance all the time in the process of large deformation of the surrounding rock, and has good support effect on the surrounding rock.