The presence of water in the chest medically becomes pleural effusion. There are many reasons for this, and the appropriate treatment needs to be chosen according to the specific cause of the disease. First of all, the most common cause is pleural effusion caused by infection, which is often caused by common viral or bacterial infections, and it is necessary to choose appropriate anti-inflammatory drugs according to different types of infections, such as bacterial infections, you can intravenous drip levofloxacin or cephalosporin antibiotics. If the infection is viral, you can use intravenous drip of Xiyanping or ribavirin for anti-infection treatment. If the amount of pleural effusion is relatively large, puncture drainage is also needed. If the pleural effusion is caused by tuberculosis, it is often necessary to go to a specialized tuberculosis hospital for treatment. If the pleural effusion is caused by a lung tumor, the treatment is often more complicated, and the type and location of the tumor can be diagnosed first to determine further treatment options.