Objective To design a new type of double-row rotary filling machine with high production capacity. Methods By analyzing the demand and technology of the existing filling machines available on the market, the shortcomings of traditional filling machines in increasing production capacity were pointed out, and the design scheme of the new double-row rotary filling machine was then proposed. The motion of the new double-row rotary filling machine was analyzed to get the trajectory of the main structure. The technical problems of the new double-row rotary filling machine needed to be addressed were pointed out. Finally, a new bottle feeding unit was designed to overcome this technical problem. Results The new double-row rotary filling machine could meet the operation requirements of filling, and the capacity of the new filling machine was improved by 0.8 to 1 times compared to the traditional filling machine. Conclusion The new double-row rotary filling machine was a self-designed innovative product, and the difficulty of its designing lied in the design of the bottle feeding unit. Although the bottle feeding unit designed was complicated in structure, it could meet the demand of the required motion.