The invention relates to a preparation method of a dimer and polymer ozone factice, wherein the method specifically comprises the following steps: 1) opening a feed port of a pressure-resistant reaction tank, closing a discharge valve, adding vegetable oil into the pressure-resistant reaction tank, and closing a feed port; 2) starting a water electrolysis ozone generator to prepare high-concentration ozone gas, and starting an injection pump; 3) starting a stirrer and a gear pump of the reaction tank; and 4) opening a discharge valve, packaging the high-viscosity pasty dimer and polymer ozonefactice into a barrel, closing the stirrer of the reaction tank, and closing the gear pump. The ozone factice has the advantages that the ozone factice is convenient to carry and does not leak; due tothe fact that the ozone factice is thick in viscosity, ozone gas in the ozone factice cannot overflow from the ozone factice, the ozone content in the ozone factice is guaranteed to be not reduced for a long time, the storage and use time of the ozone factice is prolonged, and the ozone factice has the long-acting sustained-release effect.