Formula processing method and device

The embodiment of the invention provides a formula processing method and device, and the method comprises the steps: determining a target element in a to-be-processed formula according to the attribute information of a first landmark element when the deletion operation of the first landmark element in the to-be-processed formula is detected, wherein the to-be-processed formula comprises a second landmark element paired with the first landmark element; deleting the first landmark element according to the type of the target element to obtain a target formula, wherein the type of the target element comprises a landmark type or a non-landmark type; and outputting the target formula. Therefore, the target element is determined in the to-be-processed formula, and the deletion operation is performed on the first landmark element according to the type of the target element, so that other parts in the to-be-processed formula are reserved under the condition that the first landmark element is deleted, and the integrity