The invention discloses an extraction method for additives in a paper food packaging material. The extraction method comprises the following steps: (1) weighing modified polyphenyl ether, and flatly laying the modified polyphenyl ether at the bottom of a weighing vessel; (2) cutting part of a food packaging area of the paper food packaging material as a sample, flatly laying the sample on the modified polyphenyl ether, and sealing by a gland; (3) putting the weighing vessel containing the sample and the modified polyphenyl ether in the step (2) into a drying oven to carry out a migration test;and (4) transferring the modified polyphenyl ether in the weighing vessel into a centrifuge tube, carrying out ultrasonic extraction and centrifugation, transferring a supernatant into a concentration bottle, carrying out nitrogen blowing concentration, and filtering with an organic filter membrane to obtain an additive extract of the sample. The invention further discloses a non-targeted screening method for additives in the paper food packaging material, and the screening method is strong in specificity, simple to operate, rapid and accurate, and rich in analysis types, and scientific methods can be provided for rapid analysis and quality control of the paper food packaging material.