The invention relates to a ship location identification method based on multi-source data fusion. The method comprises the following steps: data calibration, wherein ship location data sent by a radarand ship location data sent by an AIS are received, and time shifting and coordinate transformation are carried out, so that unified time and space reference points can be formed by the ship locationdata sent by the radar and the ship location data sent by the AIS; data fusion, wherein the data fusion is carried out on the radar-measured data and the AIS-measured data, which are subjected to thedata calibration, through the normal membership function method; and coordinate prediction, wherein a ship track is predicted through the Kalman filtering algorithm, so that the coordinates of a shipare estimated. The method provided by the invention has the advantages that the data detected by the radar and the AIS are fused through the multi-source data fusion technology, and the ship track ispredicted through the Kalman filtering algorithm to estimate the coordinates of the ship, so that when the ship enters a prohibited area and tends to anchor, the corresponding ship can be automatically warned or expelled for sea area protection.