To provide a rotation auxiliary tool which supports a wind force rotation top to be smoothly and securely rotated upon blowing breath to the top and is convenient in use.

The rotation auxiliary tool 6 includes an insertion hole 7 which is one size larger than the rotary shaft 3 of the wind force rotation top 1 and has a depth sufficient for holding the rotary body 2 so as not to be slanted by ≥15° from the horizontal state upon inserting the rotary shaft 3. Fig.2 indicates the front view when the rotation auxiliary tool 6 is formed by arranging the insertion hole 7 on a flat surface on the upper end part of a columnar rod-like matter 8 and the rotary shaft 3 of the top 1 is inserted into the insertion hole 7 and set there. After setting like this, when breathing on the top 1 from the direction of the arrow mark in the upper part, the top 1 smoothly starts rotating and keeps rotation firmly. When the rotation auxiliary tool 6 is held by hand and the top 1 under rotation is lightly thrown up, the top 1 jumps out of the rotation auxiliary tool 6 and drops to a table surface etc. and moves. After the movement, the top 1 keeps rotating.