A finger joint rehabilitation training device comprising a control portion, a data acquisition portion connected to the control portion, a pneumatic system connected to the control portion and a wearable training portion connected to the pneumatic system, the wearable training portion being provided with a pneumatic telescopic component; wherein the data acquisition portion is configured for acquiring hand motion information of a first hand and transmitting the hand motion information to the control portion, the hand motion information comprising hand pressing information; the control portion is configured for controlling the pneumatic system to inflate the pneumatic telescopic component or to draw air from the pneumatic telescopic component according to the hand motion information, to make the wearable training portion change between a flexion condition and a stretching condition, so as to realize a hand mirror training of a second hand; characterized in that the finger joint rehabilitation training device comprises a wearable data portion, the wearable data portion is in a shape of a glove, and the data acquisition portion is disposed at a palm portion of the wearable data portion; and the data acquisition portion comprises a pressure sensitive element, the pressure sensitive element comprises an elastic housing and a conductive adhesive layer, the conductive adhesive layer is composed of a copper wire embedded in a conductive adhesive, the conductive adhesive layer comprises a first conductive adhesive layer and a second conductive adhesive layer, the first conductive adhesive layer and the second conductive adhesive layer are not in contact with each other and are respectively disposed on opposite inner side walls of the elastic housing. wherein the data acquisition portion is configured for acquiring hand motion information of a first hand and transmitting the hand motion information to the control portion, the hand motion information comprising hand pressing information; the control portion is configured for controlling the pneumatic system to inflate the pneumatic telescopic component or to draw air from the pneumatic telescopic component according to the hand motion information, to make the wearable training portion change between a flexion condition and a stretching condition, so as to realize a hand mirror training of a second hand; characterized in that the finger joint rehabilitation training device comprises a wearable data portion, the wearable data portion is in a shape of a glove, and the data acquisition portion is disposed at a palm portion of the wearable data portion; and the data acquisition portion comprises a pressure sensitive element, the pressure sensitive element comprises an elastic housing and a conductive adhesive layer, the conductive adhesive layer is composed of a copper wire embedded in a conductive adhesive, the conductive adhesive layer comprises a first conductive adhesive layer and a second conductive adhesive layer, the first conductive adhesive layer and the second conductive adhesive layer are not in contact with each other and are respectively disposed on opposite inner side walls of the elastic housing.