A method, device and computer storage medium for multichannel touch control of an all-in-one machine are disclosed. The method for multichannel touch control of the all-in-one machine includes: providing a channel display window on a user interface, and setting up link buttons between the channel display window and each channel; setting up a multichannel touch control component on the user interface, receiving touch point information from a user, converting the touch point information into corresponding multichannel operation information, and performing corresponding operation on each channel based on the multichannel operation information. The contents of the multiple channels can be displayed by providing a channel display window on the user interface of the all-in-one machine; with the multichannel touch control component set up on the user interface, the touch control operation on the multiple channels at the same time can be activated. For example, the content of the multiple channels can be annotated, captured or printed at the same time, which improves the efficiency of operations on the multiple channels.