The methods selected for review after gastric cancer surgery include: 1. blood biochemical examination: including basic indicators of body recovery, such as liver function, hematocrit, tumor marker CEA, glycoprotein antigen, etc.; 2. imaging examination: including ultrasound and CT examination, and it is generally recommended that within two years after surgery, CT examination assessment should be performed once every six months or one year; 3. oncological assessment: three months after early gastric cancer surgery, review oncological assessment once; six months or one year for gastroscopic assessment; after five years, basically, gastroscopic assessment can be performed once a year.