Repeated bloody nasal mucus needs to be careful of nasopharyngeal cancer, but also be careful of prenasal mucous membrane eruption, nasal cavity, sinus and other malignant tumors, and it is recommended to seek medical treatment in time. Repeated bloody nasal mucus may be caused by nasopharyngeal carcinoma. When suffering from nasopharyngeal carcinoma, the patient has blood when he/she inhales and wipes his/her nose because of the bleeding caused by the ulceration on the surface of nasopharyngeal carcinoma, and the patient does not have a lot of bleeding, but his/her nasal mucus has blood repeatedly. The repeated bloody nasal discharge may also be caused by the erosion of mucous membrane in front of the patient’s nasal cavity, which may result in a small amount of blood, which is mixed with the nasal discharge, and along with the swinging of cilia inside the patient’s nose, slowly flows to the back of the patient’s nasal cavity, so that when wiping the nose, the patient will find the repeated bloody nasal discharge. There may also be malignant tumors of the nasal cavity and sinuses, which also cause the patient’s nasal mucus to be bloody repeatedly. Repeated bloody nasal discharge, it is recommended to go to the otorhinolaryngology department of the hospital immediately, under the guidance of the doctor on the nasal cavity, sinus examination, identify the cause of the disease, symptomatic treatment, it is recommended to timely medical treatment, so as not to delay the treatment.