A belt type passenger conveyor, comprising a belt conveying passengers riding thereon and a drive system circulating at least the belt in a main frame. The belt is formed in a double structure having a conveyor belt (3) and drive belts (4a, 4b, 4c). The conveyor belt (3) circulates along a first circulating route formed in the main frame. The drive belts (4a, 4b, 4c) circulate along a second circulating route formed on the inside of the first circulating route. Then, the drive belts (4a, 4b, 4c) are brought into contact at least with a part of the inner peripheral surface of the conveyor belt(3) to transmit a drive force for circulating the conveyor belt (3) to the conveyor belt (3). The drive system comprises driving mechanisms (5a, 5b, 5c) generating a drive force for circulating the drive belts (4a, 4b, 4c).