The invention discloses a production method of a charge self-recovery electret film. The method comprises the following steps: 1, embossing a regular recess pattern on a first film or a second film through a hot embossing technology, wherein the first film is a polymeric film which is negatively charged after undergoing corona poling, and the second film is a polymeric film which is positively charged after undergoing corona poling; 2, polarizing the first film or the second film by using a corona poling technology to make the first film or the second film charged, and adsorbing the first film and the second film; 3, carrying out hot pressing thawing treatment on the first film and the second film which are adsorbed through a hot pressing film formation technology to form a composite electret film with an upper layer being the first film, a lower layer being the second film and a middle part having a porous structure; and 4, polarizing the composite electret film by using a negative high-voltage corona poling technology to make the composite electret film keep charges. The charges kept by the composite electret film disappear when interfered by the outside, and the composite electret film adsorbs outside charges after the outside interference disappears.