No more blood in stool after chemotherapy for rectal cancer is generally a phenomenon that the condition has improved, but it does not mean that rectal cancer has been cured, but only indicates that the condition of rectal cancer has been controlled to a certain extent. Rectal cancer is one of the common malignant tumors in digestive tract, and one of the common symptoms of this malignant tumor is blood in stool, chemotherapy is one of the main treatment means, chemotherapy kills rectal cancer cancer cells so that the tumor foci will be reduced in size, and when the condition improves, the clinical symptoms of the patients such as blood in stool and abdominal pain will be reduced or disappear. To determine whether the condition of rectal cancer has improved or not, one should not only rely on clinical symptoms such as blood in stool, but also do CT, MRI and other imaging tests to comprehensively evaluate the condition. It is recommended to consult hospitals for professional doctors to evaluate the condition and formulate further treatment plan.