The utility model discloses a wheeled fountain mechanism. Including ring cavity and base, a ring cavity terminal surface is fixed with first transparent plate, another terminal surface of ring cavity is fixed with the second transparent plate, base and a column casing cooperation, a column casing has a perfect understanding fixedly through branch pipe and ring cavity each other, second transparent plate end face centre opens has a round hole, a second transparent plate surperficial equipartition is fixed with the LED lamp, a round hole and a column casing clearance fit. The utility model discloses an adopt the fountain structure of a loop configuration, through sealing at a pair of transparent plate of annular middle part space settings, form a box, set up lamplight assembly in the box, carry out the setting of light to the fountain, simultaneously, set up a nozzle and a column casing on fountain structure, have a perfect understanding each other through a column casing and ring cavity, the setting of supplying water, this fountain structure has simple structure, and simple to operate has improved lamplight assembly's life effectively.