Painless, intermittent, hematuria visible to the naked eye throughout is the most common symptom of renal pelvis cancer. Renal pelvis cancer is a kind of malignant tumor of the kidney that occurs in the renal pelvis. There may be no obvious symptoms in early stage of renal pelvis cancer, but with the progress of the disease, hematuria, lumbar pain, bladder irritation and systemic symptoms may appear. 1. Hematuria: it is the most common symptom of the disease, which manifests as intermittent as well as painless hematuria throughout the whole course of the disease, and it can appear as naked eye hematuria or microscopic hematuria. 2. Lumbago: it is also a common symptom, and the nature of pain is usually dull pain, which is often caused by upper urinary tract obstruction due to the invasion of tumor tissues. Some patients may also suffer from renal colic due to ureteral obstruction. 3. Bladder irritation symptoms: some people may have bladder irritation symptoms such as urinary frequency and urgency as well as urinary pain. 4. Systemic symptoms: patients with advanced stage may also have systemic symptoms and manifestations such as waist mass, emaciation and anorexia. Renal pelvis cancer may not have obvious symptoms in the early stage, but with the progress of the disease, the above symptoms or other symptoms may appear. If you suspect renal pelvis cancer, you need to go to the hospital as soon as possible for consultation and active treatment. Doctors should formulate individualized diagnosis and treatment plan according to the specific condition to avoid delaying the condition.