A method for predicting the crystallization induction period of gas hydrate in water-in-oil emulsion contain wax includes establishing a crystallization induction period model of gas hydrate in water-in-oil emulsion system contain no wax according to the crystallization induction period model of gas hydrate and the theory of gas molecule adhesion kinetics and thermodynamic phase equilibrium, and calculating the crystallization induction period of gas hydrate in water-in-oil emulsion containing no wax. A model for predicting the crystallization induction period of gas hydrate in the water-in-oil emulsion system containing wax is established according to the Freundlick isothermal adsorption theory, the adsorption of wax precipitated in the water-in-oil emulsion system at the oil-water interface and the model of the crystallization induction period of gas hydrate in the water-in-oil emulsion system without wax. Acquiring temperature and pressure data of the system during the induction period of the hydrate to be measured; a crystallization induction period of the gas hydrate in the water-in-wax oil emulsion system to be measured is calculated according to a prediction model of the crystallization induction period of the gas hydrate in the water-in-wax oil emulsion system and the temperature and pressure data, and the crystallization induction period of the gas hydrate in the water-in-wax oil emulsion system to be measured is obtained.