Method of preparing bacteria cellulose composite material

The invention discloses a method for preparing bacterial cellulose composite material, comprising steps as follows: the production medium of bacterial cellulose is prepared and then acetobacter xylinum strain is put in the production medium of bacterial cellulose; sodium alginate, collagen, water-soluble chitin, gelatin or hyaluronic acid polymer material are added into the production medium in step b for cultivating a bacterial cellulose composite membrane, wherein, the adding amount of the polymer material is 1% to 5% of the weight of the production medium of bacterial cellulose; later the bacterial cellulose composite membrane which is prepared from step c is processed and washed by distilled water till being in a neutral state, and then tiled on filter paper and dried for becoming a finished product. The invention directly adds the polymer material to the production medium of bacterial cellulose; in the process of growth, the bacterial cellulose is directly composited with the added polymer material; the preparation process is simple; and the structure of the composite material of bacterial cellulose is uniform.