To provide a connection tool characterized in that: a male member and a female member constituting the connection tool can be connected through one action; the surroundings of the connection part exhibit decorative effects; and this gives pleasure to the user of the connection tool and at the same time increases the use value.

The connection tool 1 comprises a male member attached on one 10 of both the bodies 10, 11 to be connected and a female member attached on the other body 11, and both the male and female members are connected by concavo-convex engaging through one action. Mutually related decorative bodies 4, 5 are placed on the male member and the female member in such a manner that a specific decoration is produced on the surroundings of the connection part in the connected state.