A repellent gel against ants of the present invention is mainly composed of water, water soluble polymer gel, alcohol and mixture of plant extracts. The water soluble polymer gel is carbopol, and the mixture of plant extracts is a combination of two or more plant extracts selected from citronellal, citronellol, citral and menthol. Thereby, a long term repellent effect againt the ants can be achieved.本發明提供一種螞蟻忌避凝膠,主要由水、水溶性高分子膠、酒精及植物萃取精油混合物所組成,該水溶性高分子膠為卡波樹酯,該植物萃取精油混合物係選自由香茅醛、香茅醇、檸檬醛及薄荷醇所組成群組中任二種以上之組合,藉此達成長效之螞蟻忌避功效。1...螞蟻忌避凝膠10...灌注筒11...第一開口12...第二開口20...推桿40...灌注頭