A health-preserving soap for body cleaning and weight reduction is made from, by weight ratio, 480 g of purified water, 120 g of sodium hydroxide, 250 g of sweet almond oil, 260 g of wheat germ oil, 240 g of camellia oil, 320 g of babassu oil, 90 g of folium isatidis, 50 g of radix scutellariae, 60 g of mimosa, 50 g of lotus leaves, 40 g of mint, 55 g of lilies, 45 g of cortex moutan and 55 g of ginsengs according to a preferred scheme. The health-preserving soap is a body cleaning and weight reduction soap made by specially using multiple plants, traditional Chinese medicine materials and proportionally mixing the materials, achieves the effects of scale removal, sterilization, cooling, oil removal and skin nourishing and whitening, is mainly made by mild and non-irritant raw materials, does not cause allergy or irritant reaction when being used for daily cleaning and care, greatly reduces the degree of skin damage, enables a user to feel cool, refreshing and comfortable after cleaning, also has better converging, oil-removing, bactericidal and antibacterial effects and is a healthy and health-preserving soap integrating body cleaning, weight reduction, skin whitening and nourishing.