The invention discloses a method for adjusting a convolutional neural network. A corresponding channel number is increased by adjusting a convolution kernel parameter and an input data parameter, convolution kernel data and input data can be adjusted by changing parameters and increasing the corresponding channel number without changing a calculation result, computing resources are fully used, theconvolution calculation speed of a convolutional layer of a first layer is increased, and therefore, the calculation time of an entire neural network is shortened. The invention also provides a convolutional neural network adjustment system and device and a computer-readable storage medium, and the above technical effects also can be achieved.