There is no characteristic difference between genders and no so-called precursors of laryngeal cancer. If laryngeal cancer grows above or below the vocal folds, there are usually no obvious symptoms in the early stage, but as the disease progresses, symptoms such as discomfort in the pharynx, lumps in the neck and blood in sputum will appear. If laryngeal cancer grows on the vocal cords, hoarseness will usually occur. The location of laryngeal cancer and individual condition are different. Generally speaking, if laryngeal cancer grows on the vocal folds, it will usually affect the pronunciation of voice, for example, at the early stage of the disease, most of the people will have symptoms such as voice becoming mute, voice becoming small, and so on. If laryngeal cancer grows on the vocal folds, there is usually no obvious early discomfort, but as the disease progresses, symptoms such as pharyngeal discomfort, pharyngeal pain, difficulty in swallowing food, and even pain on the side of the neck or behind the ear, neck lump, persistent cough, etc. If laryngeal cancer grows below the vocal folds, it usually affects the pronunciation of voice. If the laryngeal cancer grows under the voice box, the symptoms are not obvious, and in the later stage, there will be symptoms such as blood in sputum and cough. Although the overall five-year survival rate of laryngeal cancer is high, the earlier the lesion is detected, the better the laryngeal function is preserved and the more likely it is to survive for a long period of time, so it is recommended that patients cooperate with professional doctors to carry out treatment as early as possible.