The present invention relates to a plucked string performance data generation device, including a MIDI input interface used for receiving MIDI data, a plurality of infrared emitters and a plurality of infrared receivers used for forming infrared strings distributed radially in form of a sector, and an infrared emitter and an infrared receiver used for a mute switch, a microcontroller used for generating MIDI data from chord data acquired from the MIDI input interface and interrupt data of the infrared strings, a MIDI output interface connected with the microcontroller, and touch pads mounted onto corresponding infrared receivers. The device has an infrared string layout in form of a sector and the touch pads arranged above infrared string sensors to form a dual sensors, where appropriate, a user may use different sensors to control the same target, whereby realizing simulation of sound of a string instrument and facilitating the use thereof.