The invention discloses an extraction method and using method of plant wax printing pigment, and relates to the technical field of wax printing. The extraction method comprises the following steps of:commonly pulverizing indigo plants, yellow avens and calanthe discolor, and then carrying out superfine pulverization, and finally carrying out supercritical extraction on submicron powder to obtainthe plant wax printing pigment. The using method of the plant wax printing pigment comprises the following steps of: firstly putting a fabric into an alums solution, soaking the fabric, then putting the fabric into a pigment solution, boiling and airing the same. The extraction method has high extraction efficiency; the prepared pigment has good solubility, a rapid oxidation property, high dyeingefficiency and a very high economic value, is convenient to store and is simple and convenient to use.