Abstract: The invention relates to a method for producing a bioartificial heart tissue graft, which leads to excellent biomechanical properties on the product and guarantees a high cell freedom with optimal preservation of the matrix. During the method, biological cells of a heart tissue preparation, particularly a heart valve or a heart vessel adhering in and/or to an extracellular matrix, are removed in-vitro. The method comprises that following steps carried out in this sequence: a) providing the heart tissue preparation of natural origin; b) removing cells, which are located in the tissue, from the extracellular matrix with the aid of an acellularization solution consisting of an aqueous solution of at least one strong anionic detergent and at least containing sodium deoxycholate; c) osmotically treating the tissue with distilled or deionized water, and; d) treating the tissue with a physiological saline solution with continuous flow or exchanging of the rinsing solution three times.