Pedal-lifting height-increasing stool

The utility model relates to a pedal-lifting height-increasing stool for an operating room, which belongs to the field of medical appliances. The height-increasing stool is provided with support legs, a base, a pedal-lifting switch, a hydraulic device, an outer rod, an inner rod, a step stool and a rubber pad, wherein the support legs are arranged at two lateral ends of the base, a hole is formed at the middle part of the base, the outer rod penetrates the hole, is divided into two halves and fixed through the hole, the pedal lifting switch is mounted at the hole formed on the side wall at the bottom end of the outer rod, the hydraulic device is arranged above the pedal lifting switch and in the inner cavity of the outer rod, the inner rod is inserted to the position above the inner cavity of the outer rod, the pedal stool is mounted at the upper end of the inner rod, and the rubber pad is fixed on the pedal stool. Since operative sites and body positions of patients, and heights and positions of medical staf