The invention discloses a socket-based coffee roasting communication method. Aiming at the demand of communication command priority, a frame data priority part is designed and added. In order that each command can pass through the corresponding communication process, a frame data unique code mechanism is added; in order to be adaptive to the characteristic of very frequent temperature monitoring during the coffee roasting process, an optimization mechanism for communication under a special condition when a command is blocked is designed; by means of the characteristic of priority queue, high priority is set for a control command of coffee roasting, low priority is set for temperature monitoring, and the real-time performance of control is ensured; and meanwhile, the time of last temperature detection is recorded in the communication mechanism at any time, and a dynamic priority-revised mechanism is provided for a scene with high demand on temperature reading smoothness.