The invention relates to a tea flower handmade facial cleaning soap and a preparation method thereof. The handmade facial cleaning soap comprises 60-100 parts of grease, 5-15 parts of tea flower sauce, 0.5-1.5 parts of tea polyphenol, 1-2 parts of teasaponin, 10-15 parts of water and 5-7 parts of NaOH. The grease comprises olive oil, coconut oil, tea seed oil, soybean oil, corn oil, and rapeseed oil; and tea flowers, tea polyphenol, tea saponin and other raw materials are all edible; the prepared soap product has high safety, tea aroma and tea flower fragrance, and good antibacterial, moisturizing and whitening effects, is neutral in pH and mild for usage, does not to hurt the skin, and can be used for cleansing. The process for preparing the tea flower handmade facial cleaning soap is simple, easy to implement, high in production efficiency and convenient for popularization, and has very good market prospects.