The invention provides a moisturizing baby diaper lotion for removing diaper rash and a preparation method thereof, which contains the following substances: Lithospermum olive oil, tea tree oil, safflower oil, sea buckthorn fruit oil, olive emulsifier, all-purpose simple emulsifier, and distilled water , Burnet burnt extract, Polygonum cuspidatum extract, Honeysuckle extract, Wild chrysanthemum extract, Cnidum monnieri extract, Green tea extract, Rhizoma root extract, mugwort leaf extract, sodium alginate, borneol, zinc oxide, calamine, Glycerin, propylparaben, 75% ethanol and fragrance. Compared with the existing technology, the diaper rash removal emulsion provided by the present invention adopts extracts of various medicinal materials, has mild properties, good stability, high safety, moisturizing and nourishing, pleasant smell, and can effectively improve the symptoms of baby diaper rash. , so that parents no longer worry about their children getting diaper rash, while it can moisturize the baby's skin and enhance the baby's resistance.