The invention discloses moisturizing sunscreen cream and a preparation method thereof. The moisturizing sunscreen cream comprises, by weight, 60-120 parts of water, 40-70 parts of glycerinum, 20-40 parts of ethylhexyl methoxycinnamate, 25-35 parts of isopropyl palmitate, 50-80 parts of titanium dioxide, 60-80 parts of cetostearyl alcohol, 20-40 parts of benzophenone-3, 15-45 parts of isostearyl alcohol polyether, 40-80 parts of glyceryl stearate, 15-35 parts of squalane, 35-55 parts of polydimethylsiloxane, 30-60 parts of xanthan gum, 60-80 parts of hyaluronic acid, 50-80 parts of methylparaben, 40-50 parts of propyl hydroxybenzoate and 5-10 parts of essence. The preparation method of the moisturizing sunscreen cream includes the steps that water, glycerinum, ethylhexyl methoxycinnamate, isopropyl palmitate, titanium dioxide, cetostearyl alcohol, benzophenone-3, isostearyl alcohol polyether, glyceryl stearate, squalane, polydimethylsiloxane and xanthan gum are heated to 70 DEG C to 80 DEG C, hyaluronic acid, methylparaben and propyl hydroxybenzoate are added, evenly stirred and cooled to 30 DEG C to 40 DEG C, and essence is added and evenly mixed. The SPF value reaches 30, and retention time is long.