To provide a speed control device of a passage device capable of enhancing the safety of the weak while maintaining the excellent transport efficiency.

An object is a passage device such as an escalator, an elevator, a moving pavement, a revolving door, and an automatic opening/closing door. An IC tag 12 is carried by the weak such as elderly persons, handicapped persons, children, and pregnant persons. When an IC tag reader 13 provided in a vicinity of a moving member of the passage device detects the IC tag 12 carried by the weak, a speed control means changes the speed or the speed pattern of the moving member of the passage device to the low speed or the low-speed pattern.