The invention discloses a frame type Christmas snowfall simulation device which consists of a fan, a snow collecting hopper, a snow conveying pipe, simulated snow, a fame and a cover body, wherein the frame is formed by assembling a strip-shaped connecting rod and a joint which are detachably connected, the cover body is arranged on the frame, the snow collecting hopper is positioned at the lower end of the cover body, an air outlet of the fan is arranged at the bottom of the snow collecting hopper and opposite to the lower end of the snow conveying pipe, and the upper end of the snow conveying pipe is arranged at the upper end of the frame and the cover body. The frame type Christmas snowfall simulation device has the advantages of variable size, variegated shape, low cost, convenient packaging and transportation, firm structure, capability of being suitable for landing placement and hanging placement, clear and real snowing effect, attractive shape and appearance decoration and capability of being conductive to enhancing the Christmas atmosphere.