A winding device, comprising: a housing; a fixing member, connected to the housing, wherein the fixing member is provided with a through cavity with two openings at both ends, wherein an elastic arm is provided at one end of the fixing member away from the housing, and a circumferential edge of the elastic arm is provided with a check portion; a reel for winding a cord, wherein the reel is rotatable in an axial direction and provided in the through cavity, and a toggle portion is provided at one end of the reel away from the housing; a knob, wherein a linkage portion and a first clamping member is provided on one side of the knob towards the fixing member, and the linkage portion cooperates with the check portion; a connecting member, connected to the end of the reel away from the housing, wherein an outer circumference of the connecting member is provided with a second clamping member that matches the first clamping member; characterised in that it further comprises a limiting component, wherein the limiting component comprises a guide member and an elastic member; a stepped hole is provided on an inner periphery of the connecting member; one end of the guide member close to the housing is provided with a cooperation portion that matches the toggle portion; multiple guide grooves are defined and formed along a circumferential direction of an inner wall of a hole with a largest aperture of the stepped hole; and a guide clamping structure is formed between two adjacent guide grooves, wherein the elastic member abuts between the fixing member and the knob, the guide member is movably passed through the stepped hole, and a clamping slider is provided along a circumferential direction of the guide member; and a fastener, wherein the fastener is passed through the guide member to connect with the knob, wherein when the knob is being pressed, the clamping slider slides out of the guide groove, and the cooperation portion abuts against the toggle portion to rotate the guide member within the stepped hole under an action of the toggle portion, such that the clamping slider engages with the guide clamping structure, and the first clamping member engages with the second clamping member; and the knob is pressed again, so as to rotate the guide member within the stepped hole under the action of the toggle portion, such that the clamping slider slides from the clamping structure into the guide groove, and the first clamping member is separated from the second clamping member. a housing; a fixing member, connected to the housing, wherein the fixing member is provided with a through cavity with two openings at both ends, wherein an elastic arm is provided at one end of the fixing member away from the housing, and a circumferential edge of the elastic arm is provided with a check portion; a reel for winding a cord, wherein the reel is rotatable in an axial direction and provided in the through cavity, and a toggle portion is provided at one end of the reel away from the housing; a knob, wherein a linkage portion and a first clamping member is provided on one side of the knob towards the fixing member, and the linkage portion cooperates with the check portion; a connecting member, connected to the end of the reel away from the housing, wherein an outer circumference of the connecting member is provided with a second clamping member that matches the first clamping member; characterised in that it further comprises a limiting component, wherein the limiting component comprises a guide member and an elastic member; a stepped hole is provided on an inner periphery of the connecting member; one end of the guide member close to the housing is provided with a cooperation portion that matches the toggle portion; multiple guide grooves are defined and formed along a circumferential direction of an inner wall of a hole with a largest aperture of the stepped hole; and a guide clamping structure is formed between two adjacent guide grooves, wherein the elastic member abuts between the fixing member and the knob, the guide member is movably passed through the stepped hole, and a clamping slider is provided along a circumferential direction of the guide member; and a fastener, wherein the fastener is passed through the guide member to connect with the knob, wherein when the knob is being pressed, the clamping slider slides out of the guide groove, and the cooperation portion abuts against the toggle portion to rotate the guide member within the stepped hole under an action of the toggle portion, such that the clamping slider engages with the guide clamping structure, and the first clamping member engages with the second clamping member; and the knob is pressed again, so as to rotate the guide member within the stepped hole under the action of the toggle portion, such that the clamping slider slides from the clamping structure into the guide groove, and the first clamping member is separated from the second clamping member.