The invention provides a multi-task certificate image automatic processing method, apparatus and device, and a readable storage medium. The method comprises the steps of obtaining certificate sample image sets for different identification tasks; marking the sample image set as a marking training sample set, performing training through a preset neural network layer to obtain a marking sample feature set, and inputting a plurality of preset classification detection tasks for training to obtain a plurality of first classification labels; calculating a plurality of loss values between the plurality of first classification labels and the mark label, and then calculating the sum of the plurality of loss values as a joint loss value; adjusting training parameters in a preset neural network layerand a preset classification detection task, continuing training, and stopping training until the joint loss value meets a preset condition to obtain a multi-task certificate recognition model; and inputting the to-be-identified target image into the multi-task certificate identification model, and outputting a second classification label of the target image. The problems that in the prior art, multi-task image recognition needs multi-model processing, the cost is high, and the efficiency is low are solved.