Prostate cancer is the most common malignant tumor in the male urinary reproductive system, with 80% of cases occurring in elderly individuals over the age of 65. From an etiological perspective, a high-fat diet may be a contributing factor to prostate cancer. However, we know that malignant tumors are consumptive diseases, and nutritional status is crucial during the treatment and recovery process, especially in elderly individuals with weaker constitutions. Therefore, patients with malignant tumors should ensure adequate nutrition intake, particularly protein intake. Milk and eggs are common foods for the general population and offer a cost-effective source of nutrition. They can be included in the diet of prostate cancer patients. Of course, dietary intake should focus on healthy proportions. It is not about consuming only milk and eggs at every meal but maintaining a normal and healthy dietary balance, which is better for the patient.