The present invention relates to a fibrous membrane used for tissue repair and products and preparation methods thereof, wherein the fibrous membrane used for tissue repair is formed by interweaving fibrous filaments with diameters of 10nm-100µm, and has a porous structure, with the fluffiness of 200-2,000cm 3 /g. In addition, the present invention also relates to a composite fibrous membrane, an implantable membrane and an anti-adhesion tissue repair membrane comprising the fibrous membrane used for tissue repair as well as preparation methods and applications thereof.