The invention relates to the field of textile machines, in particular to a non-contact driving device for a knitting needle of a computerized flat knitting machine. The non-contact driving device for the knitting needle of the computerized flat knitting machine comprises a flat knitting machine base, a needle plate, the permanent magnet knitting needle, a flat knitting machine head which linearly moves back and forth, and an electromagnetic device. The electromagnetic device is installed in the flat knitting machine head capable of moving back and forth, and the permanent magnet knitting needle in a needle groove of the needle plate is rejected or attracted by controlling the magnetic field of the electromagnet when the flat knitting machine head moves back and forth so that the permanent magnet knitting needle can rise and fall for knitting. According to the non-contact driving device for the knitting needle of the computerized flat knitting machine, the knitting needle does not make contact with the flat knitting machine head moving back and forth, in this way, abrasion losses of the machine can be reduced, vibration is reduced during knitting, and the failure rate is reduced; meanwhile, the internal structure of the computerized flat knitting machine head is simplified. The non-contact driving device for the knitting needle of the computerized flat knitting machine has the advantages of being low in cost, long in service life and easy to popularize.