Prostate cancer radiotherapy involves high doses of radiation, which typically results in related side effects. However, the severity of these side effects varies from patient to patient depending on individual factors such as their physical constitution. Therefore, clinically, some patients may experience severe symptoms, while others may have milder symptoms, indicating significant individual differences. Common side effects of radiotherapy include radiation cystitis, characterized by frequent urination, urgency, and possibly hematuria. Radiation proctitis is also common, presenting symptoms such as a sensation of heaviness around the anus and diarrhea. Additionally, bone marrow suppression, manifesting as a decrease in white blood cells and platelets, is another side effect.