The cause of right-sided facial swelling is not necessarily kidney disease, because the edema of kidney disease is generally symmetrical edema on the left and right sides, and appears in the eyelids and other parts of the loose tissue, mostly combined with abnormal urinalysis, such as large amounts of foamy urine or hematuria, hypertension, etc. If the right side of the face is edematous and painful unilaterally, the possibility of mumps is generally considered to be high. It is recommended to actively consult the infection department to identify the virus and other causes, and to actively treat the disease with antiviral therapy. The most common clinical causes of edema are infectious and non-infectious, such as bacterial, viral and fungal. Non-infectious ones can be seen caused by dysfunction of the heart, kidney, liver, endocrine origin, etc. Therefore, it is recommended to actively identify the cause and treat it symptomatically.