The invention discloses a visual system of a strawberry picking robot, wherein the visual system can accurately identify a strawberry target and capture the position information of the strawberry target. The visual system includes a near-field camera and a far-field camera. The far-field camera is used for taking long-distance photos of the strawberry target, the near-field camera is used to takeclose-range photos of the strawberry target, and positioning of the strawberries is achieved through target positioning of the two photos. A method of grasping the color features and shape features ofstrawberries is as follows: S1. extraction of a color threshold range; S2. construction of a binary image according to a color threshold; S3. corrosion operation; S4. swelling operation; S5. boundarydetection; and S6. centroid calculation of the strawberry target and showing of coordinates.