The invention relates to a makeup remover cleansing gel and a preparation method thereof. The makeup remover cleansing gel comprises lard, olive oil, glycerin, agar powder, distilled water, an antiseptic, lemongrass essential oil, vitamin B, vitamin E, isohexadecane and sodium ethylene diamine tetracetate. The preparation method comprises the following steps: weighing raw materials, mixing lard, olive oil, lemongrass essential oil and vitamin E, putting the mixed raw materials in a reaction kettle, and stirring to obtain a first mixture; mixing glycerin, distilled water, the antiseptic, vitamin B, isohexadecane and sodium ethylene diamine tetracetate, stirring, and heating to obtain a second mixture; and adding the first mixture to the second mixture, carrying out constant speed heating according to a heating rate of 5-8DEG C/min while stirring under a speed of 2500-3000rpm until 50-64DEG C, adding the agar powder under a speed of 0.4-0.6cm<3>/min, homogenizing, and naturally cooling to obtain the makeup remover cleansing gel. The makeup remover cleansing gel has the advantages of good makeup removal effect, simple components, and suitableness for industrialization.