Ear fungal infection generally refers to fungal disease of the external auditory canal, whose causative fungi include Aspergillus, etc. It may be related to factors such as water ingress into the external auditory canal, earwax harvesting cross-infection, and local flora imbalance. Water in the external auditory canal: water in the ear may change the PH value of the ear canal, which then breeds fungi causing infection. You should keep the external ear canal dry and use cotton swabs to wipe it dry promptly after water ingress. Ear cerumen collection cross-infection: collecting ear cerumen in irregular places may carry fungus on the collection tools due to the lack of strict sterilization, which then leads to fungal infection. Local flora imbalance: Long-term use of antibiotic ear drops in some otitis media patients may lead to local flora imbalance and secondary fungal infection. Reasonable use of antibiotic ear drops and hormones, etc. to avoid fungal disease of the external auditory canal. Ear fungal infections recommend timely medical treatment for standardized diagnosis and treatment.