Registration of patients after gastrointestinal cancer radical surgery, including the information of treatments, recurrence & metastasis, adverse events,etc.

This study adopts a multicenter, open, and registered research method, and plans to include 840 cases, including 360 cases in the Huaier Granule test group, 360 cases in the radiotherapy and chemotherapy control group, and 120 cases in the blank group. Using natural grouping, the registered objects are not pre grouped or queue divided, and the diagnosis, treatment, efficacy, and safety of gastrointestinal malignant tumor patients are accurately recorded under real conditions.

Inclusion Criteria:

1. Patients with gastrointestinal cancer (stomach, colon or rectum);
2. Patients who have received gastrointestinal cancer radical surgery within a month;
3. Patients between 18 and 70 years old,no gender restriction;
4. Patients volunteer to participate this study and have signed the informed consent form.

Exclusion Criteria:

1. No chemotherapy or combined radiation and chemotherapy indications；
2. Unable to cooperate to complete related information collection;
3. Participation in any other clinical trial within three months;
4. Conditions that are considered not suitable for this study investigators.

Patients after gastrointestinal cancer radical surgery.