The invention relates to a method for producing instant pleurotus eryngii chips, and belongs to the technical field of the deep processing of agricultural products. The main pleurotus eryngii chip production process comprises: performing pretreatment such as conventional selection, washing, precise segmenting, blanching, enzyme killing, cooling and the like on pleurotus eryngii, and performing ultrasonic auxiliary dipping, hot-air drying, vacuum frying and dewatering, centrifugal deoiling, seasoning and packaging. In the method, due to the adoption of a new process of combining the ultrasonic auxiliary dipping, the hot-air drying, the vacuum frying and dewatering, the dipping efficiency is improved, the moisture content of pleurotus eryngii pieces is reduced due to hot-air predrying, and the vacuum frying time is shortened greatly; and products of the pleurotus eryngii chips have the characteristics of high puffing rate, low oil content, excellent sensory quality and the like. In the method, the pleurotus eryngii is not processed by conventional freezing, so the production period of the finished products is shortened greatly, the production cost is saved, and a feasible new path is provided for the deep processing of the pleurotus eryngii.