To simultaneously improve both the manipulability for changing an engaging place of a pair of binding hooks and an effect of preventing the binding hooks from dropping out, in a binding fixture for a ski boot.

A base edge 4a of a binding hook 4 engaged in an engaging groove 3 in a main body 2 of a binding fixture A is sticked with an elastically deformable dropout prevention bar 11, and the both edges of the dropout prevention bar 11 are supported by elastically displaceable rubber members 14. When the binding hook 4 is pressed downwardly, a gap W in which the base edge 4a can be shifted is formed between the base edge 4a for the binding hook 4 and the dropout prevention bar 11 with the sum of the quantity of deformation by the elastic deformation of the dropout prevention bar 11 and the quantity of displacement by the elastic displacement of each of the rubber members 14.