The invention relates to a rotor system of an all hydraulic fertilizer turner which is mainly used for turning organic fertilizer. The rotor system comprises a trommel (2), a blade component I(3) and a blade component II(4), wherein the left half part of the outer circumferential wall of the trommel (2) is divided into three areas: A1, B1 and C1 in sequence from the left to the middle, the right half part of the trommel (2) is divided into three areas:A2, B2 and C2 in sequence from the right to the middle, the blade component I(3) is composed of two groups which are spirally arranged in area A1 at the left half part of the trommel (2) and area A2 at the right half part of the trommel (2), the blade component II(4) is composed of six groups, three groups of which are arranged at the left part and the other three groups are arranged at the right part, the three left groups are respectively arranged in area A1, area B1 and area C1 at the left half part of the trommel (2), and the three right groups are respectively arranged in area A2, area B2 and area C2 at the right half part of the trommel (2). The structure of the blades is arranged reasonably. Therefore, the fertilizer turning and stacking effect is good.