Pleural malignant tumors are generally divided into primary pleural cancer and metastatic pleural cancer, etc. Due to the big difference of individual patients, there is no definite time, and the specific situation should be different from person to person. 1. Primary pleural cancer: primary pleural cancer is relatively rare and the survival time is relatively short, most of the patients can only survive for about two years, and about 10% of the patients can survive for more than two years, but if the patients actively cooperate with the doctors for treatment, they may improve their condition and prolong their survival time. 2. Metastatic pleural cancer: metastatic pleural cancer is usually more common, if patients actively cooperate with doctors to carry out chemotherapy, targeted and endocrine treatment, the survival time can be prolonged to about 5~10 years, but if patients have malignant change of the disease, the survival time may be shortened to about 3~6 months. It is suggested that patients should actively cooperate with doctors to carry out treatment, which can be conducive to prolonging the survival time.