The invention discloses a remote sensing monitoring method for the rice planting area. The method comprises steps that remote sensing transplanting images at the rice transplanting stage and remote sensing full heading images at the full heading stage are acquired; a transplanting normalized water index is calculated according to the remote sensing transplanting images; a transplanting ratio vegetation index is calculated according to the remote sensing transplanting images; a full heading normalized water index is calculated according to the remote sensing full heading images; a full headingratio vegetation index is calculated based on the remote sensing full heading images; normalized water index difference is calculated according to the transplanting normalized water index and the fullheading normalized water index; ratio vegetation index difference is calculated according to the transplanting ratio vegetation index and the full heading ratio vegetation index; space-crossing operation is utilized to identify planting areas of the rice according to the normalized water index difference and the ratio vegetation index difference. The method is advantaged in that the rice plantingareas can be rapidly and accurately identified.