A little bit of sesame-like black spots inside the stool may be caused by some reasons such as consumption of black sesame seeds or peptic ulcer. 1. Consumption of black sesame seeds: There is a large amount of melanin in the outer skin of black sesame seeds, which cannot be absorbed by the body. After consuming black sesame seeds, these melanin will be excreted along with the food residue, and there will be a little bit of sesame-like black spots in the stool. 2. Peptic ulcer: peptic ulcer will lead to the peptic tract tissue ulcers, bleeding and other phenomena, oozing blood in the gastrointestinal peristalsis, with the excretion of goods under the oxidation reaction, so there is a little bit of stool inside the sesame-like black dots of the situation. When there is a little bit of sesame-like black dots in the stool and accompanied by other reactions, you can carry out a detailed examination of the cause of the disease in the hospital and standardized diagnosis and treatment under the guidance of the doctor.