The present invention is to solve the following problems: the length of a fishing rod is not adjustable if a handle connection unit for a reel fishing rod is lost as the existing handle connection unit for a reel fishing rod, which has been filed by the present applicant, has to be separately carried in a fishing bag in order to use the handle connection unit to adjust the length of a fishing rod a long installation time is required as a user has to attach and/or detach the handle connection unit to the head unit of the handle for a fishing rod in a turn-screw manner and the handle connection unit for a reel fishing rod is separated to outside from the reel fishing rod main body during fishing as the turn-screw is worn down upon time. The present invention has the purpose to provide a handle-zoom-regulating type reel fishing rod having an adjustable length, which comprises a fishing rod main body (10), a reel sheet unit (20), a handle unit for a reel fishing rod (30), a main guide unit (40), and a secondary guide unit (50). The handle-zoom-regulating type reel fishing rod having an adjustable length of the present invention can firstly adjust the entire length of a reel fishing rod by connecting the main guide unit and the secondary guide unit in a forced insertion and fixation method, and secondly adjust the length of the main guide unit through a hidden guide unit for adjusting the length so as to regulate the length corresponding to fishing types and fishing purposes. Also, the reel fishing rod having an adjustable length of the present invention has the hidden guide unit for adjusting the length mounted within the handle unit for a reel fishing rod so that the possibility of losing the hidden guide unit for adjusting the length can be reduced, and the entire volume of the reel fishing rod can be reduced by 60% in comparison to the existing fishing rod. Furthermore, the reel fishing rod having an adjustable length of the present invention is light, and has excell
