The series of Washing-filling-capping 3-in-1 machine for filling carbonated drink contains washing, filling and capping with complete automation,suitable for filling carbonated drink into polyester bottles and PET bottles. It can be used for all kinds of bottles. The bottleneck blocking makes the process of changing bottles easily by only adjusting the height of conveyor chain. The filling process adopts the micro-pressure technology,which makes filling process faster and more stable.