Female urethritis mainly manifests as urinary sensation symptoms such as frequent, urgent and painful urination, and some patients have recurrent episodes. If patients have urinary sensation symptoms in addition to urinary sensation symptoms, some patients present with fleshly hematuria or even blood clots without high fever and low back pain, consider acute simple cystitis, also known as lower urethritis. If the patient shows symptoms such as back pain, high fever, chills, nausea and vomiting, peripheral weakness, dizziness, etc., in addition to urinary sensation symptoms, and there may be pressure pain at the ureteral point and percussion pain in the renal area of the back during physical examination, consider upper urethritis.