The invention discloses a fishing reel drag knob assembly (1) capable of showing force. A drag knob cover (12) of the drag knob assembly (1) engages with a main shaft (4) and is configured to be moved along an axial direction of the main shaft (4), an outer end face of the drag knob cover (12) acts on a drag system, a drag knob cover (12) propulsion component is arranged between the drag knob cover (12) and the drag knob (11), the drag knob (11) is configured to be rotated to adjust the acting force of the drag knob cover (12) propulsion component on the drag knob cover (12), so as to adjust an acting force of the drag knob cover (12) on the drag system, an outside diameter of the drag knob cover (12) is larger than the outside diameter of the drag knob (11), and force application scales (18) are arranged on the drag knob cover (12) to accurately display a relative rotation angle of the drag knob (11) and the drag knob cover (12), so as to determine the acting force of the drag knob assembly (1) on the drag system and conveniently control the take-up and pay-off of a fishing reel.
