Preparation method of natural gutta-percha emulsion

The invention discloses a preparation method of natural gutta-percha emulsion. The preparation method comprises the following steps: freezing eucommia ulmoides seed shells, leaves or barks at low temperature, crushing, sieving, dissolving, extracting and separating to obtain a gutta-percha liquid; adding the gutta-percha liquid into a glass reaction kettle, adding an oily emulsifier and an antioxidant, and stirring to obtain a gutta-percha crude emulsion; adding a water-based emulsifier, a pH regulator, a mechanical stabilizer and soft water into a reaction kettle, heating, adding the gutta-percha crude emulsion, distilling, shearing and emulsifying; and finally, standing and filtering the emulsion to obtain the natural gutta-percha emulsion. In the preparation process, the dissolved gluesolution is directly used for emulsification, so that the procedures of solidification, solvent removal, drying and the like of the gutta-percha emulsion in the extraction process are omitted, the useamount of the solvent is