A transport system (1, 1A) comprising: a first moving body which can move autonomously; and a second moving body which has an accommodation portion for accommodating the first moving body, wherein: the second moving body accommodates the first moving body and moves to transport the first moving body; and the first moving body autonomously moves inside the accommodation portion of the second moving body and changes a position in the accommodation portion of the second moving body, characterized in that the first moving body includes a first wireless communication unit, the second moving body includes a traveling state acquisition unit configured to acquire information on a traveling state of the second moving body, and a second wireless communication unit configured to transmit the information on the traveling state acquired by the traveling state acquisition unit or transmit a control signal for the first moving body, the control signal being generated based on the information on the traveling state acquired by the traveling state acquisition unit, and the first moving body changes the position during the movement of the second moving body by: autonomously moving inside the accommodation portion of the second moving body based on the traveling state of the second moving body indicated in the information received by the first wireless communication unit; or autonomously moving inside the accommodation portion of the second moving body according to the control signal received by the first wireless communication unit when the first wireless communication unit receives the control signal generated based on the traveling state of the second moving body. a first moving body which can move autonomously; and a second moving body which has an accommodation portion for accommodating the first moving body, wherein: the second moving body accommodates the first moving body and moves to transport the first moving body; and the first moving body autonomously moves inside the accommodation portion of the second moving body and changes a position in the accommodation portion of the second moving body, characterized in that the first moving body includes a first wireless communication unit, the second moving body includes a traveling state acquisition unit configured to acquire information on a traveling state of the second moving body, and a second wireless communication unit configured to transmit the information on the traveling state acquired by the traveling state acquisition unit or transmit a control signal for the first moving body, the control signal being generated based on the information on the traveling state acquired by the traveling state acquisition unit, and the first moving body changes the position during the movement of the second moving body by: autonomously moving inside the accommodation portion of the second moving body based on the traveling state of the second moving body indicated in the information received by the first wireless communication unit; or autonomously moving inside the accommodation portion of the second moving body according to the control signal received by the first wireless communication unit when the first wireless communication unit receives the control signal generated based on the traveling state of the second moving body. the second moving body accommodates the first moving body and moves to transport the first moving body; and the first moving body autonomously moves inside the accommodation portion of the second moving body and changes a position in the accommodation portion of the second moving body, characterized in that the first moving body includes a first wireless communication unit, the second moving body includes a traveling state acquisition unit configured to acquire information on a traveling state of the second moving body, and a second wireless communication unit configured to transmit the information on the traveling state acquired by the traveling state acquisition unit or transmit a control signal for the first moving body, the control signal being generated based on the information on the traveling state acquired by the traveling state acquisition unit, and the first moving body changes the position during the movement of the second moving body by: autonomously moving inside the accommodation portion of the second moving body based on the traveling state of the second moving body indicated in the information received by the first wireless communication unit; or autonomously moving inside the accommodation portion of the second moving body according to the control signal received by the first wireless communication unit when the first wireless communication unit receives the control signal generated based on the traveling state of the second moving body. autonomously moving inside the accommodation portion of the second moving body based on the traveling state of the second moving body indicated in the information received by the first wireless communication unit; or autonomously moving inside the accommodation portion of the second moving body according to the control signal received by the first wireless communication unit when the first wireless communication unit receives the control signal generated based on the traveling state of the second moving body.