The invention provides a wearable robot device and a method of controlling the wearable robot device. The wearable robot device includes a frame, a detector provided on the frame for collecting information on a force applied from a user, a controller for determining a required amount of torque necessary for an operation of the wearable robot device based on the information collected by the detector, and for determining a sound corresponding to the required amount of torque, and an output unit for outputting the determined sound.