1.Sputum cytology examination: smear to find shed lung cancer cells. 2.Low-dose CT photograph of chest: to exclude the possibility of lung cancer. Rectal finger examination and pelvic examination: to exclude gynecological cancer and rectal cancer. pelvic examination is done once every 3 years for women aged 20 to 40; and once a year after age 40. rectal finger examination is done once a year after age 40 for both men and women. 4.Sigmoidoscopy: Over 50 years old, it is better to start at the age of 40 if you have relatives with intestinal cancer; sigmoidoscopy should be done every other year for both men and women, and after two negative tests, it should be done once every 3 to 5 years. 5.Fecal occult blood test: once a year over 50 years old, at least 48 hours before the test, do not eat meat and vitamin C high-fiber diet. Collect specimens (two) once a day for 3 days. If the test result is positive, further colonoscopy should be done. 6.Cervical smear cytology: Experts suggest that cervical smear and pelvic examination should be done once a year for three years after the first intercourse. after 30 years of age, according to the risk factors, if the result is negative for three or more times consecutively, the number of times to be examined can be reduced. 7. Prostate cancer: including rectal examination, serum prostate-specific antigen (PSA) measurement and rectal ultrasound examination. It is recommended that men over 50 years old should have prostate cancer screening once a year; if they have a family history of prostate cancer, they should start screening at the age of 45. 8.Mammography: Mammography combined with B-ultrasound should be done once a year after 40 years old (can be advanced to 35 years old for high-risk group); ultrasound should be preferred for young women under 35 years old; basic mammography should be done once during 35-40 years old for future control. 9.Tumor markers: venous blood, with target recheck. 10.B ultrasound: abdomen, pelvis, breast, thyroid, etc.