The invention discloses a preparation method of smoked bacon. The method comprises the following steps: (1) cutting streaky pork into strips, and putting the strips into Chinese liquor for soaking; (2) powdering and mixing star anise, galanga resurrectionlily rhizomes, cassia bark, fennel, clove, nutmeg, tsaoko amomum fruits, dahurian angelica roots, lesser galangal rhizomes and myrcia with salt,uniformly smearing the obtained mixture on the pork strips, placing the strips in a pickling jar, sealing the jar, and conducting refrigeration pickling for 4-7 days; (3) hanging the refrigerated porkin a ventilation chamber for air drying; and (4) hanging the air-dried meat in a smoking room, and conducting smoking treatment for 8-12 hours. The ground of the smoking room is provided with activecarbon bags and shaddock peels; the smoke of a smoking stove is obtained by incomplete combustion of firewood materials; and the firewood materials comprise dried orange peels, tea tree stems, grain husks, pine bark and sawdust. The ten-flavor smoked bacon product prepared by the method is safe and healthy, low in carcinogen content, golden and rosy in color, tender and juicy in meat quality, fresh, fragrant and tasty, and strong in aroma.