A two-way communication support system supports two-way communication between a second terminal device which receives, from a first terminal device, first state data changed according to the state of a first user present on a side where the first terminal device is arranged and which outputs an image and a voice indicated by the first state data and the first terminal device. The two-way communication support system includes a state identifier and an output controller. The state identifier analyzes second state data changed according to the state of a second user present on a side where the second terminal device is arranged so as to identify the state of the second user. The output controller causes the first terminal device to output analysis information indicating a result of the identification of the state of the second user performed by the state identifier.