The invention discloses facial cleanser capable of balancing the pH value of skin, and a preparation method of the facial cleanser. The facial cleanser is prepared from the following components: deionized water sodium lauroyl glutamate, sodium methyl cocoyl taurate, dipropylene glycol, glycerol, dicyl polyglycoside, sodium cocoyl hydroxyethyl taurate, sodium lauroamphoacetate, polyquaternary ammonium salt-7, polyethylene glycol (PEG)-120 methyl glucose dioleate, glyceryl stearate, stearate, panthenol, sodium pyrrolidone carboxylic acid (PCA)-Na, hydroxyethyl cellulose, citrus aurantium dulcis flower extract, citrus junos fruit extract, ginseng extract, angelica keiskei extract, centella asiatica extract, cordyceps sinensis extract, methylparaben and essence. The facial cleanser adopts a weak acidic amino acid formula, so that the pH value of the facial cleanser is matched with that of the skin of a human body; the facial cleanser is rich, fine and smooth in foam, enables the skin to be moisturized for a long time and not to be tight while removing residual makeup, dirt and sebum, maintains the balance of water and oil of the skin, and enables the skin to be more moist and full as well as healthy and natural.