A user's intention deduction apparatus, comprising: a motion capture sensor configured for sensing motion information about a user's motion; a multimodal sensing unit comprising a plurality of modality sensors including at least one of a sound sensor for sensing sound signals, an image sensor for sensing image information, a bio information sensor for sensing bio information and a touch sensor for sensing a touch gesture on a touch pad; a controller including a user's intention prediction unit and a user's intention applying unit, said user's intention prediction unit comprising: a motion information analyzer for analyzing at least one piece of motion information received from the motion capture sensor, a first predictor configured to predict a part of a user's intention using the at least one piece of motion information, and a second predictor configured to predict the user's intention using the part of the user's intention and multimodal information received from at least one of said plurality of modality sensors to predict the user's intention in consideration of the multimodal information within a range of the user's intention limited by the part of the user's intention, to interpret the multimodal information received from the at least one of said plurality of modality sensors in association with the predicted part of the user's intention to predict the user's intention; wherein the user's intention prediction unit is configured to generate a control signal for controlling the operation of the multimodal sensing unit, the control signal being configured to activate a part of the modality sensors of the multimodal sensing unit based on the predicted part of the user's intention. a motion capture sensor configured for sensing motion information about a user's motion; a multimodal sensing unit comprising a plurality of modality sensors including at least one of a sound sensor for sensing sound signals, an image sensor for sensing image information, a bio information sensor for sensing bio information and a touch sensor for sensing a touch gesture on a touch pad; a controller including a user's intention prediction unit and a user's intention applying unit, said user's intention prediction unit comprising: a motion information analyzer for analyzing at least one piece of motion information received from the motion capture sensor, a first predictor configured to predict a part of a user's intention using the at least one piece of motion information, and a second predictor configured to predict the user's intention using the part of the user's intention and multimodal information received from at least one of said plurality of modality sensors to predict the user's intention in consideration of the multimodal information within a range of the user's intention limited by the part of the user's intention, to interpret the multimodal information received from the at least one of said plurality of modality sensors in association with the predicted part of the user's intention to predict the user's intention; wherein the user's intention prediction unit is configured to generate a control signal for controlling the operation of the multimodal sensing unit, the control signal being configured to activate a part of the modality sensors of the multimodal sensing unit based on the predicted part of the user's intention. a motion information analyzer for analyzing at least one piece of motion information received from the motion capture sensor, a first predictor configured to predict a part of a user's intention using the at least one piece of motion information, and a second predictor configured to predict the user's intention using the part of the user's intention and multimodal information received from at least one of said plurality of modality sensors to predict the user's intention in consideration of the multimodal information within a range of the user's intention limited by the part of the user's intention, to interpret the multimodal information received from the at least one of said plurality of modality sensors in association with the predicted part of the user's intention to predict the user's intention; wherein the user's intention prediction unit is configured to generate a control signal for controlling the operation of the multimodal sensing unit, the control signal being configured to activate a part of the modality sensors of the multimodal sensing unit based on the predicted part of the user's intention.