The utility model relates to an automatic hook binding device, which is suitable for fastening one end of a hook to a fishing line. The automatic hook binding device comprises a body, a rotating ring, a line groove and a fishing line equal length auxiliary device.The body includes a inserting rod for inserting the hook.The rotating ring is centered on the inserting rod and rotates relative to the body, and the rotating ring has a wire clamp.The trunking cuts through the body and the rotating ring.The fishing line equal length auxiliary device includes at least one positioning rod. By positioning the other end of the fishing line at the at least one positioning rod of the fishing line equal length auxiliary device, and then passing one end of the fishing line around the line slot and around the body, one end of the fishing line is tied to the hook by rotating the rotating ring, so as to ensure that the distance between the two opposite ends of the fishing line is constant, so as to achieve the goal of Achieve the effect of equal length fishing line.一種自動綁鉤裝置，適用於將一釣鉤的一端繫固於一釣線，該自動綁鉤裝置包含一本體、一轉動環、一線槽，及一釣線等長輔助器。該本體包括一供該釣鉤插置的插桿。該轉動環以該插桿為中心且相對於該本體轉動，該轉動環具有一夾線件。該線槽切穿該本體與該轉動環。該釣線等長輔助器包括至少一定位桿件，藉由將該釣線的另一端定位於該釣線等長輔助器的該至少一定位桿件，再將該釣線的一端繞過該線槽並環繞該本體一圈後，藉由轉動該轉動環將該釣線的一端綁固於該釣鉤，能夠確保該釣線的兩相反端的距離不變，達到便於取得等長釣線的功效。
