As the most common bladder cancer in the urinary system, we may be more familiar with it. With the development of the society, the incidence of bladder cancer is increasing, which has seriously affected people’s life safety. As this is a chronic disease, it is not easy to find out during the process of its occurrence, so we should pay attention to those symptoms, and we should understand them carefully below. The most common symptom of bladder cancer is hematuria that can be seen by naked eyes without any feeling. This is the unique “abnormal urination signal” of bladder cancer, and almost every bladder cancer patient will have it, and about 85% of bladder cancer patients will consult the doctor for this reason. There are two types of hematuria, namely, microscopic hematuria and microscopic hematuria. Naked eye hematuria refers to blood-colored urine that can be seen directly by eyes, while microscopic hematuria refers to urine with red blood cells that can be found under microscope. Hematuria in bladder cancer is mostly painless and intermittent, most of them are whole hematuria, a few of them are terminal hematuria, and hematuria accompanied with urinary frequency and urgency is less common. Data show that those who take this as the main symptom account for 94%. The hematuria is mostly visual hematuria, followed by microscopic hematuria. It can be intermittent, or complete hematuria, or terminal hematuria. Because of the diversity of hematuria, it is easy to be misdiagnosed or delayed diagnosis. If the disease develops or the scope of lesion is large or combined with infection, it may be combined with symptoms of urinary tract irritation, discharge of putrefactive material, discharge of lumps, blood clots, or difficulty in urination due to blockage of urinary tract by lumps, dribbling down, or even urinary retention. Frequent urination and urgency If the cancerous tumor grows in the bladder triangle, bladder irritation may appear a little earlier, and if urinary pain occurs, it is not in the early stage. All in all, if unexplained hematuria occurs suddenly, it may be a sign of bladder cancer. Prolonged and excessive consumption of salty and spicy food is one of the factors causing this disease, therefore, it is recommended to reduce the intake of overheated, expired, cold and spoiled food in one’s diet. If you are old and weak, it is recommended to eat some anti-cancer food or alkaline food with high alkaline content, and those who have genetic predisposition to certain diseases should also consume more anti-cancer food, and at the same time, you should also maintain a good mental state, which is very helpful to the prevention of cancer. 3.Other If the tumor infiltrates into or grows in the ureteral orifice, it can cause dilatation of ureter, which will lead to formation of hydronephrosis and increase of kidney size. When bladder cancer has lung, liver and bone metastasis, corresponding symptoms will appear, such as coughing, shortness of breath, liver function abnormality, pain in the liver area, and bone pain in a certain place, and systematic examination should be carried out in order to make a diagnosis in time and treat it as early as possible. Since bladder cancer is easily confused with many urinary system diseases, it brings great difficulties in the process of examination and treatment, which requires patients to combine their actual situation with their own to do all the examinations, avoid misdiagnosis and then treat safely, so as to promote the rapid healing of the body.