A method for measuring plant planting data, and a method for planning operating route, device and system are provided, which relate to the technical field of plant protection. The method includes: training a deep network model using historical information of a planting region (S210); receiving image information of the planting region (S220); processing the image information of the planting region using a deep network model to obtain plant planting data (S230); and outputting the plant planting data (S240). The method for planning operating route utilizes the plant planting data obtained by the measuring method to plan an operating route.