The work aims to design and research a fruit automatic packaging collection and weighing integrated device with respect to the problems that fruit growers are subject to large labor intensity in the process of packaging fruit and the fruit is likely to be damaged in such process. The fruit was placed in a fruit storage box and transported to the sorting device through a conveyor belt. When the fruit with a diameter more than 8 cm passed through the screening device, the photoelectric sensor was touched by the fruit to generate a memory. Then, the delivery device sent the foam net to the front of the packaging port. After 1 s, the servo drove the scissors to cut the foam net. After cutting, the turntable of the packaging device rotated (large fruit rotated by 120° and small fruit rotated by 60°) and the servo drove the four-bar mechanism to push the fruit out of the packaging device, and completed the falling of the net into the collecting device. LCD12864 LCD screen could show the weight and quantity of fruit in the collection box. Based on the mechanical design theory, the integral device construction was calculated and designed. The finite element was used to analyze the structure of key points, which improved the accuracy and packaging efficiency of the packaging process. The packaging speed was 30 pcs/min and the packaging failure rate was reduced to 5%. The manpower and material resources are reduced through integrated electromechanical control, and the stability and adaptability of the machine are improved through the mutual use of the single-chip microcomputer and the drive module.