The utility model discloses a but distinguishing mark culture dish, dish body upper portion outside cover is equipped with fits with a contraceptive ring, it establishes on dish body annular month outside digital signature layer to be connected with the cover below fitting with a contraceptive ring, it establishes in outside on the annular zhonghuan of dish body to be connected with the cover below month digital signature layer, the digital signature layer was for overlapping the annular structure of establishing in the dish body outside day, it establishes in outside under the annular zhonghuan of dish body to be connected with the cover below day digital signature layer, the below of zhonghuan is provided with the cover and establishes the outside annular runner band at dish body down, be connected with to even interval the baffle down between the ring sum runner band, be provided with sticky notes groove between the adjacent baffle, use its central longitudinal axis line to be provided with the side neck of two symmetries as the symmetry axis on dish body's the outer wall, be provided with the opening of rectangle on the preceding lateral wall of side neck respectively, be provided with year digital signature post and all digital signature posts in two side necks respectively, it conveniently carries out the distinguishing mark, high durability and convenient use, high efficiency.