The invention relates to an emulsion type ointment which comprises alginic acid and salts thereof, an emulsifier, a cross-linking agent, an oil-based agent and a water-based agent, wherein the oil-based agent accounts for 10%-85% by weight of the emulsion type ointment, the alginic acid and the salts thereof account for not more than 7% by weight of the emulsion type ointment, the emulsifier accounts for not lower than 1% and not higher than 30% by weight of the emulsion type ointment, and weight ratio of the cross-linking agent to the alginic acid and the salts thereof is not lower than 1:10and not higher than 5:1, and the remaining is the water-based agent. Materials adopted for the ointment have low price and can be obtained easily, the preparation route is simple, and the product hasstrong stability and is stable without layer separation when standing at 30 DEG C for one year.