The most common clinical manifestations of bladder cancer include: one initial clinical presentation is hematuria, which typically appears as painless, intermittent gross hematuria, sometimes it can also manifest as microscopic hematuria. The hematuria may occur only once or last from one day to several days, and it can subside or stop on its own. The color of the hematuria can be light red, possibly dark brown, generally dark red. The amount of bleeding and the duration of the hematuria are not necessarily proportional to the malignancy degree, size, scope, and number of the tumor. Additionally, bladder cancer patients can experience symptoms of bladder irritation, such as frequent urination, urgent urination, painful urination, and difficulties in urination, etc.