The present invention relates to an adjustable neck guard comprising a neck body comprising a neck sleeve and a back bar sheet； a winding device disposed on the neck sleeve and comprising a cylinder, a shaft member and a winding member, a spring and at least one fastener, the cylinder is provided with a first toothing portion on a circumference of the wall, the shaft member is pivotally disposed on the cylinder body, and the shaft member is provided with a second toothing portion, the winding wire The shaft member is pivotally disposed on the tubular body, and the winding member is provided with a third engaging portion, the third engaging portion is detachably fitted to the first engaging portion, and the shaft member can drive the winding The shaft is disengaged from the first latching portion, and the second latching portion is releasably engaged with the third latching portion, and the spring is biased between the tubular body and the winding member, the at least one system The piece is threaded to the winding member, and the at least one piece is coupled to the chin rest.本創作關於一種可調式護頸圈，其包括一護頸本體，包括一頸套及一下巴托片；一捲線裝置，其設於該頸套且包括一筒體、一軸件、一捲線件、一彈簧及至少一繫件，該筒體於一周壁周設一第一卡齒部，該軸件可軸移地樞設於該筒體，該軸件設有一第二卡齒部，該捲線件可軸移地樞設於該筒體，該捲線件設有一第三卡齒部，該第三卡齒部可脫開地嵌卡於該第一卡齒部，該軸件可帶動該捲線件軸移脫開該第一卡齒部，該第二卡齒部可脫開地嵌卡於第三卡齒部，該彈簧彈抵於該筒體及該捲線件之間，該至少一繫件穿設於該捲線件，該至少一繫件連接該下巴托片。
