Dermis tissue cell aggregation, which comprises isolated dermis tissue cells with biological activity, is provided. The isolated dermis tissue cells are preserved in a mixed solution consisting of an isotonic saline solution for medical use, an anticoagulant, a nutrient for cells and a cell growth promoter, and a non-fluidity dermis tissue cell aggregation with adhesion is formed after several processes. A method for preparing the dermis tissue cell aggregation and the use thereof in preparing medicines for repairing scars are provided.
