It's okay to eat rice and millet with low platelets, but eating these can't raise platelets. It is recommended to eat Wu Hong soup, which is boiled with red dates, safflower, medlar, red beans and brown sugar, which can help treat thrombocytopenia. It may be caused by many diseases, such as leukemia, lymphoma and purpura. I suggest you go to the hematology department of a regular big hospital above grade 3, and ask a specialist to give you a comprehensive and systematic examination.