The automatic equipment of high precision multi-sorting checkweigher for food packaging can detect products with different weights in continuous work and automatically classify, collect and pack them according to the set weight grade. Conveyor belt checkweigher with digital output is used in the processing of various aquatic products, seafood, chicken, duck, fish, meat and other foods, the precise classification of automobile hydraulic accessories, the weight sorting and packing of daily necessities and many other fields.