To provide a fall-down-type-pole support device which stably fixes the fall-down type pole even when a snow surface is not hard enough.

A body 100 of the fall-down-type-pole support device 300 includes a pipe-like inner wall portion having a hole part in the center, an outer wall portion forming together with the inner wall portion a ring-like storage part around the inner wall portion and a bottom face. The inner wall portion has an inner-wall projection portion extending upward from the outer wall portion, while the outer wall is formed with a diameter getting larger toward the lower portion and has a drooping part 110 to be fixed for preventing slipping when set on the snow surface or a frozen surface. A cover 200 includes: a body-fitting part which is fitted into the body 100; a projection-fitting hole; an annular part 204, extending outward in a radial direction, for preventing it from slipping off or suppressing the speed of slipping off when tipped over; and a cone shaped tapered surface 202 which projects up toward the projection-fitting hole in the center from the annular part 204.