The criteria for complete remission of acute leukemia are as follows: 1) complete disappearance of symptoms and signs, disappearance of pre-anemia, bleeding, fever, and recovery of enlargement of liver, spleen and lymph nodes; 2) laboratory tests, routine blood tests suggesting absolute values of granulocytes >1.5×10^9/L and platelets >100×10^9/L. No leukemic cells can be seen in routine blood tests, and infantile cells <5% in bone marrow images. For example, granulocytes, primitive and naïve granulocytes should be <5%. In the case of lymphocytes, primitive and naive lymphocytes should be <5%, and in the case of monocytes, primitive and naive monocytes should be <5%. In summary, the cells causing leukemia should be <5%. It is ideal if both chromosomal and immunological tests are normal.