NOVELTY - An equipment for dry ferment comprises a digester of dry ferment, in which such digester includes a digester body for containing materiel, a flexible sealing film for covering the digester body, and a sealing join assembly for sealing the digester body with the flexible sealing film.    USE - The equipment and method are applicable in treating solid organic wastes from e.g. fowl and other farm animals by anaerobic plus aerobic fermentation to produce methane and organic fertilizer.    ADVANTAGE - Such equipment is simple in structure, convenient to use, with airtight cover and directly-viewable attachment to inspect fullness or emptiness of methane thus produced to avoid residual methane to cause explosion, to maintain safe operation, to simplify the safety of monitoring system, and to optimize low cost in investment.    DETAILED DESCRIPTION - An equipment for dry ferment comprises a digester of dry ferment, in which such digester includes a digester body for containing materiel, a flexible sealing film for covering the digester body, and a sealing join assembly for sealing the digester body with the flexible sealing film, and is characterized in that the digester body comprises at its top part, a top-open part and, at its side part, at least one side-open part for material to be supplied in and taken out, and when the flexible sealing film covers the digester body, such sealing-join assembly forms at least one sealing strip or one sealing rope to seal the space at the connection field between the digester body and such flexible sealing film continuously, and the flexible sealing film covers the top open part and at least one side open part is for material in and out while keeping airtight at the same time.    An INDEPENDENT CLAIM is also included for a method for dry ferment by tightly covering the digester body that contains solid organic waste from the top-open part to the side-open parts with the flexible sealing film for anaerobic gas production during the fermentation process.