After ovarian cancer surgery, a person’s immune system is relatively weak and they are quite frail. At this time, recuperation is necessary, and careful nursing is essential. The diet should primarily consist of easily digestible, high-energy foods. Patients can eat more fish after ovarian cancer surgery, as fish is high in protein and also easy to digest and absorb. Additionally, it is suitable to eat some fruits like bananas. Moreover, it is important to drink plenty of water. After surgery, ensure at least 2000 milliliters of water intake per day to help expel toxins and prevent constipation.