The invention provides an annular porous flow disturbing structure of a gas flow adjusting device of a solid rocket engine. The annular porous flow disturbing structure is used for premixing and uniformly distributing high-temperature and high-speed incoming gas, the nonuniform scouring and pneumatic impact of gas to a valve element of the flow adjusting device are reduced, and the annular porous flow disturbing structure can also be used for filtering bulky residues mixed up with the gas in the solid rocket engine. According to the annular porous gas flow disturbing structure, a plurality of venting holes can be machined in an annular flow disturbing structure body according to the incoming flow direction, the shapes and the number of the venting holes are adjusted correspondingly according to the area of a gas inlet and the area of a jetting pipe outlet, and the annular gas flow disturbing structure is located on the periphery of the valve element of the flow adjusting device and fixed between the gas inlet and the valve element of the flow adjusting device in a mechanical way, a gluing way and the like. The annular porous flow disturbing structure has the characteristics of being simple in structure, compact, easy to form, convenient to assemble, resistant to high temperature, reliable in working and the like, and furthermore, the functions of premixing incoming gas flow, uniformly distributing the gas, and reducing the local scouring and ablation of the high-temperature and high-speed gas to the gas flow adjusting device are achieved.