Patients with vocal cord nodules who do not have an allergic constitution can eat fish. Vocal cord nodules are benign growths on the surface of the vocal cords, typically occurring bilaterally and symmetrically, mainly characterized by hoarseness. Their development is primarily associated with improper voice usage or long-term vocal abuse. For vocal cord nodules, patients are advised to talk less and maintain a light diet. Patients with vocal cord nodules can eat fish, but we must prevent some patients from doing so because some of them have an allergic constitution. Fish is a high-protein food, and consuming it may trigger allergic reactions in these patients. The onset of an allergic reaction can also lead to congestion and swelling of the vocal cord mucosa, further worsening the hoarseness and aggravating the condition of the vocal cord nodules. Therefore, it is best for these patients to avoid eating fish.