The purpose of our study was to determine the safety and morbidity of early oral intake (EOI) compared with delayed oral intake (DOI) after lower extremities orthopaedic surgeries under spinal anaesthesia. 300 ASA I–III patients undergoing lower extremities orthopaedic surgeries under spinal anaesthesia between July 2019 and December 2019 were randomized assigned into two groups : EOI (n=150, patients were allowed oral intake after surgery), DOI (n=150, patients were allowed oral intake 6 hour after surgery), in the postanaesthesia care unit (PACU) or ward. Patients were evaluated for nausea, vomiting, drink and meal desire, thirst scale, appetite score, and satisfaction scale. Statistical analysis was performed with Student’s t–test and Chi–Square tests. Complete data were available for 283 patients (EOI=142, DOI=141). Twenty minutes after receiving water the incidence of nausea and vomiting in both EOI and DOI groups was very low. And there was no significant difference between the two groups at the same point (p >0.05). Compared with DOI group, after receiving water, there was a significant decrease in patients’ thirst scale (p >0.001), appetite score (p >0.0001) in EOI group. Significantly, more patients’ satisfaction were reported in the EOI group (p >0.0001). No serious adverse effects were reported during the study period. For patients undergoing lower extremities orthopaedic surgery, early oral intake after surgery was safe, with lower thirst scale and appetite score, and higher satisfaction.