Taking a plate drying kilns as the research object and optimizing the structure for the phenomenon of uneven distribution of its wind velocity field, the paper combined the method of Algorithm for Inventive-Problem Solving (ARIZ) as well as Computational Fluid Dynamics (CFD) to optimize the design of the kiln in three directions, which included the air inlet of the drying kiln, adding wind baffle, and changing the gap between the upper and lower plates. Three schemes in each direction totally produced 9 optimization scheme models. In the meanwhile, the simulation of each optimization scheme was carried out to compare and analyze its wind speed field cloud map. The wind speed data of ten monitoring points were counted, and the three evaluation indexes of average wind speed difference, average wind speed and coefficient of variation were calculated to obtain the comprehensive optimization and improvement scheme. Concretely speaking, operational approach was to set the parameters of the air intake vent to 20. Two rows of air intakes, a total of ten, were installed at the bottom, and the remaining ten cross mounted on both sides. An air baffle with an angle of 20° was installed on the top of the drying kiln and changed the gap between upper and lower plates to 400 mm. After optimization, the to obtain the comprehensive optimization and improvement scheme. Concretely speaking, operational approach was to set the parameters of the air intake vent to 20. Two rows of air intakes, a total of ten, were installed at the bottom, and the remaining ten cross mounted on both sides. An air baffle with an angle of 20° was installed on the top of the drying kiln and changed the gap