A vegetable and fruit picker device and a picking method, the picker device comprising: a ground rail (1) fixedly arranged on the ground. The ground rail (1) is provided with a movable vegetable and fruit picker body (2) thereon, and the vegetable and fruit picker body (2) is provided with a supporting frame (3) thereon; the supporting frame (3) is provided with two vertical sliding rails (4) and a supporting plate (5) transversely arranged between the two sliding rails (4); the supporting plate (5) is provided thereon with a servo motor (6) thereon, and a lead screw (7) is connected to an output end of the servo motor (6); further provided is a telescopic connecting rod (8) which moves relative to the lead screw (7); one end of the telescopic connecting rod (8) is provided with a sensing system, and the sensing system comprises a pneumatic motor (9), an image color sensor (10), pneumatic shears (11) and an overturnable fruit supporting device (12); and the overturnable fruit supporting device (12) has a steering gear (13) connected thereon which is used for turning over the overturnable fruit supporting device. The present vegetable and fruit picker device is characterized by high operation efficiency, very low working labor intensity and an ideal harvesting effect.La présente invention concerne un dispositif de cueillette de légumes et de fruits et un procédé de cueillette, le dispositif de cueillette comprenant un rail au sol (1) placé à demeure sur le sol. Le rail au sol (1) est doté d'un corps mobile de cueillette de légumes et de fruits (2), et le corps de cueillette de légumes et de fruits (2) est doté d'un cadre de support (3) ; le cadre de support (3) est doté de deux rails coulissants verticaux (4) et d'une plaque de support (5) placée transversalement entre les deux rails coulissants (4) ; la plaque de support (5) comprend un servomoteur (6), et une vis-mère (7) est reliée à une extrémité de sortie du servomoteur (6) ; en outre, une tige de liaison télesc