The present invention relates to a blended essential oil for bacterial inhibition, which comprises a blended essential oil consisting of several plant essential oils, an emulsifier which is the polyoxyethylene sorbitan fatty acid ester non-ionic surfactant having the hydrophilic hydrophobic balance (HLB) greater than 10, a bacterial inhibitor which is the Chlorhexidine Gluconate for enhancing the inhibitory effect of the blended essential oil on bacteria, a cosolvent which is the polypropylene glycol lauryl polyethenoxy ether having the hydrophilic hydrophobic balance (HLB) greater than 10, and water. The transparent clear yellow liquid which is a composition having special aroma and effects of bacterial sterilization/inhibition and mosquito repellency is formed after mixture and preparation.本發明係為一種複方精油抑菌的組成物，包括：數種植物精油組成的複方精油；一種乳化劑，此乳化劑為親水疏水平衡值(HLB)大於10之聚氧乙烯山梨醇酐脂肪酸酯非離子界面活性劑；一種抑菌劑，此抑菌劑為Chlorhexidine Gluconate可增強複方精油的抑菌效果；一種助溶劑，為親水疏水平衡值(HLB)大於10之聚丙二醇月桂聚氧乙烯醚非離子界面活性劑；與水。其混合備製後可形成一種透明清澈淡黃色液體，具有特殊香氣並能用於殺菌抑菌及驅蚊效果的組合物。
