A beach buggy base includes a case body, a cap, and three fixing units. The case body has a hollow space in its interior, pivotally combined with the cap with hinges. The fixing units respectively are fixed under the bottom of the case body by adjustable back and forth and right and left. The fixing units respectively consist of a position rail, a clamp and a fastening member, and the clamp has a center hole to fit around a rod of a frame of a beach buggy and then screwed tightly to combine the case on the frame of a beach buggy, with needing no rope or screws or bolts for binding a case on the frame.