The invention provides a swing bicycle. The swing bicycle is a combined member of a child bicycle and a rocking horse; on the basis of a Tongcheng child bicycle structure, a device for being easily demounted from and fixed on a child bicycle is arranged on a metallic rocking horse; when a child plays indoor, the bicycle can be placed on the special rocking horse, and a front wheel and a back wheel of the bicycle are locked by quick-demounting screws; and the child rides on the bicycle, and front and back swing of the bicycle can be achieved by controlling front and back centers of gravity.