The invention discloses a handwriting data caching method, an apparatus, a device and a storage medium, which relate to the technical field of an intelligent plate. The method comprises the followingsteps of: generating handwriting according to a touch action on a display interface to obtain the handwriting on the display interface; generating handwriting data according to the writing state of the handwriting, wherein the handwriting data comprises process data and result data, and the result data stores the final display state of the handwriting; the handwriting data is sequentially sent tothe writing buffer area. The method can solve the technical problems that the server side caches and parses handwriting data at the same time in the prior art, increases the complexity and instabilityof the system logic, and realizes the synchronization of the handwriting content of a new access client side in a simple and effective manner.