A display driving method, compensation data compression and decompression methods and devices, a display device and a storage medium. The compensation data compression method includes dividing a display panel into at least one region; determining a reference value according to first compensation data of each pixel unit in each of at least one region; performing a computation on the first compensation data and the reference value to obtain corresponding second compensation data. The storage bit length of the second compensation data is shorter than the storage bit length of the first compensation data.