The present invention relates to a collar device including a neck seat including an upper neck portion, a lower neck portion and a connecting portion, the opposite sides of the connecting portion integrally connecting the upper neck portion and the lower neck respectively a seat portion, the connecting portion is provided with a slit； an adjusting device comprising a lower supporting portion and a supporting portion movably coupled to the lower supporting portion, the upper supporting portion connecting the upper neck portion, the lower support The upper support portion is connected to the lower neck portion, the upper support portion is provided with at least one first adjustment portion, and the lower support portion is provided with at least one second adjustment portion, each of the first adjustment portions being movably positioned at the at least one second Adjustment department.本創作關於一種頸圈裝置，其包括一頸座，其包括一上頸座部、一下頸座部及一連接部，該連接部之相對二側分別一體連接該上頸座部及該下頸座部，該連接部設有一縫口；一調整裝置，其包括一下支撐部及一可移動地連接於該下支撐部之上支撐部，該上支撐部連接該上頸座部，該下支撐部連接該下頸座部，該上支撐部設有至少一第一調整部，該下支撐部設有至少一第二調整部，各該第一調整部可移動地定位於該至少一第二調整部。
