A constant ringing in the ears may be related to colds and flu, as well as secretory otitis media and tinnitus. 1. Colds: It may be due to the fact that after a cold, there is a lot of nasal mucus in the nasal cavity, and if you blow your nose hard enough, it is easy for the nasal mucus to enter the middle ear through the Eustachian tube, resulting in retrograde infection. This may lead to ear ringing. 2. secretory otitis media: the cause of its occurrence is mostly due to inflammation stimulation, resulting in increased secretion, if there is fluid in the tympanic cavity, it is easy to induce tinnitus symptoms, which manifests itself as a low-pitched tinnitus, and there may be a ringing in the ears all the time. 3. Neurogenic tinnitus: the cause of the disease may be related to the accumulation of fluid in the labyrinth of the inner eardrum, microthrombosis of the inner ear blood vessels, damage to the auditory nerve and blood vessels, etc., which may be manifested as a ringing in the ears all the time. If there is a constant ringing in the ears, it is recommended to consult a doctor for a clear diagnosis and standardized diagnosis and treatment according to the doctor’s instructions.