A flow regulating valve of a gas stove, comprising: a valve member having an inlet hole, an outlet hole and a chamber which respectively communicates with the inlet hole and the outlet hole; the valve member having a joint end which is provided with an opening communicating with the chamber; a plug member having an axial bore in an axial direction thereof and a flow regulating structure in a radial direction thereof, the flow regulating structure communicating with the axial bore; the plug member rotatably provided in the chamber of the valve member, the axial bore corresponding to the outlet hole and the flow regulating structure corresponding to the inlet hole; the plug member having a connecting end facing away from the axial bore and corresponding to the opening of the joint end; a stepper motor including a motor body and a rotating shaft, wherein the flow regulating valve is characterized in that: a connecting member disposed on the connecting end, the connecting member having a block in a radial direction thereof, and at least a part of the block located outside the opening of the joint end; a fixed base having a first side and a second side positioned back-to-back, wherein the first side is engaged with the joint end of the valve member; the fixed base further having a through hole communicating with the first side and the second side and corresponding to the opening, wherein a wall of the through hole is provided with a first block section and a second block section, a space for rotating the block is formed between the first block section and the second block section, the connecting member passes through the through hole, and at least a part of the block is in the space to limit a rotating angle of the plug member; and wherein the stepper motor body is connected to the second side of the fixed base and the rotating shaft is connected to the connecting member. a valve member having an inlet hole, an outlet hole and a chamber which respectively communicates with the inlet hole and the outlet hole; the valve member having a joint end which is provided with an opening communicating with the chamber; a plug member having an axial bore in an axial direction thereof and a flow regulating structure in a radial direction thereof, the flow regulating structure communicating with the axial bore; the plug member rotatably provided in the chamber of the valve member, the axial bore corresponding to the outlet hole and the flow regulating structure corresponding to the inlet hole; the plug member having a connecting end facing away from the axial bore and corresponding to the opening of the joint end; a stepper motor including a motor body and a rotating shaft, wherein the flow regulating valve is characterized in that: a connecting member disposed on the connecting end, the connecting member having a block in a radial direction thereof, and at least a part of the block located outside the opening of the joint end; a fixed base having a first side and a second side positioned back-to-back, wherein the first side is engaged with the joint end of the valve member; the fixed base further having a through hole communicating with the first side and the second side and corresponding to the opening, wherein a wall of the through hole is provided with a first block section and a second block section, a space for rotating the block is formed between the first block section and the second block section, the connecting member passes through the through hole, and at least a part of the block is in the space to limit a rotating angle of the plug member; and wherein the stepper motor body is connected to the second side of the fixed base and the rotating shaft is connected to the connecting member. a connecting member disposed on the connecting end, the connecting member having a block in a radial direction thereof, and at least a part of the block located outside the opening of the joint end; a fixed base having a first side and a second side positioned back-to-back, wherein the first side is engaged with the joint end of the valve member; the fixed base further having a through hole communicating with the first side and the second side and corresponding to the opening, wherein a wall of the through hole is provided with a first block section and a second block section, a space for rotating the block is formed between the first block section and the second block section, the connecting member passes through the through hole, and at least a part of the block is in the space to limit a rotating angle of the plug member; and wherein the stepper motor body is connected to the second side of the fixed base and the rotating shaft is connected to the connecting member.