A transport apparatus for weak person has a mobile chassis for transporting the weak person, a powered lifting mechanism and a seating assembly assembled on the mobile chassis. The lifting mechanism has a lifting arm connected to be driven to pivot upward or downward by an actuator, and an armpit supporting device assembled on an upper end of the lifting arm. The seating assembly has a seat supporting mechanism, and two seat plates mounted on the left and right seating arms of the seat supporting mechanism and are connected to and driven by two driving assemblies respectively to form a seat for the weak person to sit thereon.
