To provide an anchoring device which can conduct troublesome operations very easily without making hands dirty in anchoring a fishing boat with a rope tensed in water for fishing carp in a lake.

Swivels 2 are fixed to both ends of a tightening member 1, hooks 3 formed so as to retain an underwater rope at the swivels 2 are fitted, and a gripping device capable of shifting its position freely is fitted to the tightening member 1.