A process of preparing a burdock composite micron essence at least includes the following. Dissolved and heated phospholipid is added to a vegetable oil extract and then stirred. After stirring, the above mixture is pour into a heated glycerol and then further stirred and a burdock extract aqueous solution is added. The aforementioned mixed solution is stirred at high speed, the emulsion-homogenized solution is subject to high-pressure homogenization, and a filtration membrane is used to filter the homogenized solution obtained to get a purple transparent burdock concentrate. The burdock concentrate is used to prepare the formulation of nano-micro emulsion which is easily absorbed by human body and thus grants improved health benefits.一種牛蒡複方微米精華液製程方法，係將溶解加熱後之磷脂加入加熱後之植物油萃取物進行攪拌，攪拌後倒入加熱後之甘油中繼續攪拌，之後再加入牛蒡萃取物水溶液，將前述混合後之溶液進行高速攪拌進行乳化均質，再將乳化均質後之溶液以高壓加以均質化，最後以過濾膜將均質化後之溶液加以過濾，即可得到紫色透明狀之牛蒡濃縮液。藉此，可使牛蒡濃縮液形成奈米化之微乳製劑，而於服用後達到易於人體吸收以及較佳之保健效果。
