The utility model relates to a device for controlling the flexible process of mixing and applying glue for a particleboard, which comprises a buffer layer (virgin rubber, emulsifier and curing agent), a small range metering layer (a metering pot and a small range weighting sensor), a glue mixing layer (a glue mixing pot and a large range weighting sensor) and a glue storing layer (surface-layer glue storing pot and a sandwich-layer glue storing pot). Through additionally arranging the metering pot and the small range weighting sensor, high specific gravity and low specific gravity metering pot by pot in a glue mixing formula is realized on the basis of the original glue mixing and applying device and process, and instant flow in wood shaving is detected through coaxially connecting a rotating encoder with a driven wheel capable of detecting wood particle weight. The utility model optimizes the glue mixing and applying process through changing hardware of a glue mixing and applying system and has the advantages of accurate glue mixing, stable glue applying, cost saving, and the like.