The present invention relates to a position-shifting type wheelchair structure, which comprises a sliding mechanism assembled on a base. The sliding mechanism has two sliding rods movably sliding out toward one side of the base. Each end portion of the two sliding rods is connected with an auxiliary supporting wheel. In addition, the sliding mechanism is assembled with a lifting mechanism. One side of the lifting mechanism is movably provided with a seat cushion that is positioned on the base in a normal state and can be movably lifted/lowered and slide laterally with the lifting mechanism and the sliding mechanism for facilitating those with mobility problems to shift positions, so that the wheelchair is more convenient for use in hospitals and home environments.本發明為一種移位式輪椅結構,其係於一基座上組設一滑移機構,該滑移機構具有可活動往基座一側滑移伸出之兩滑桿,該兩滑桿端部各結合一輔助支撐輪,另該滑移機構上組設一升降機構,該升降機構一側活動組設一座墊,使該座墊常態時恰位於基座上,並可隨升降機構及滑移機構活動上下升降及橫向滑移,方便行動不便者進行移位動作,進而使輪椅更符合於醫院和居家環境使用。1...基座11...滾輪12...驅動輪固定桿13...支撐架131...擋止部2...滑移機構21...滑軌22...滑座23...滑桿24...輔助支撐輪3...升降機構31...升降腳架311...搖柄32...輔助伸縮管4...座墊架41...扶手插結孔5...椅背架6...腳踏架7...角度調整機構71...伸縮裝置72...連桿73...控制器8...驅動輪9...扶手91...插結柱