To explore the effect of general anesthesia combined with transversus abdominis plane block (TAPB) and/or rectus sheath block (RSB) on the recovery of patients with gastrointestinal tumor after surgical treatment.

Inclusion Criteria:

1. Aged 18 to 80 years.
2. ASA 1-3.
3. Clinical diagnosis of gastric carcinoma and colorectal cancer without metastasis.
4. Surgery for gastrointestinal surgery.

Exclusion Criteria:

1. Patients and their family members refuse to accept the clinical trial;
2. Complicated with acute cholangitis, gastrointestinal bleeding or ascites, etc.;
3. Hepatic encephalopathy, psychosis or neuropathy;
4. Body weight for acid-base and electrolyte imbalances, endotoxemia, and cachexia decreased by more than 2% or 5% in the past 2 months or 6 months.
5. Uncontrolled hypertentsion, coronary heart disease, diabetes.