Because the pumped air contains other moisture and liquids, the vacuum oil will emulsify quickly and reduce the performance of the vacuum pump. The one-head vacuum filling machine designed and produced by Ningbo Tianyu Machinery Equipment Co., Ltd. completely separates the vacuum from the filling, avoids the liquid being filled into the vacuum pipe, and completely separates the vacuuming and filling from the air to avoid any bubbles. And with the quantitative control on the liquid volume filled into the product, and the volume to be filled can be directly input through the display, and the control accuracy can be ≤0.5g.