This study aims to design and conduct a prospective, multicenter, randomized, parallel-controlled, sham-controlled clinical trial to evaluate the clinical efficacy of electroacupuncture for postsurgical gastroparesis syndrome (PGS) after digestive tract tumor surgery and systematically assess its clinical safety. By measuring gastrointestinal hormones, inflammatory factors, proteomics and metabolomics, we intend to explore the mechanism underlying the improvement of postoperative gastrointestinal motility by electroacupuncture. We will identify the optimal population for electroacupuncture in PGS by analyzing baseline characteristics and efficacy correlations, to provide evidence for individualized clinical intervention. The primary endpoint is the Daily Diary of Gastroparesis Cardinal Symptom Index (GCSI-DD) score at Day 14 of treatment. Finally, based on clinical data, this study will define the eligible population and optimal protocol of electroacupuncture for PGS, and further standardize and promote its clinical application in postoperative complications of cancer.