The invention relates to the technical field of agricultural Internet, in particular to a pest and
disease identification method and device, and the method comprises the steps: building a standard
growth model by comparing with a
plant growth
library according to the type of a
plant planted by a user in a signing area and the current growth period; Obtaining actual data of each growth index of theplant in the signed area, matching the actual data with the standard
growth model, and further judging the growth state of the
plant; When it is determined that the plant is in the pest and
disease damage state, carrying out image collection in the contract signing area, and determining and pushing the pest and
disease damage types by combining image recognition and a pest and
disease damage database to an intelligent terminal. The plant detail index
database is established in advance, the
plant growth state can be accurately monitored by matching the obtained actual data with the corresponding standard data, the pest and
disease occurrence degree is determined, the pest and disease type can be further determined through image recognition, and a user can know the pest and disease type timely, rapidly and accurately.