A nail printing device includes a printing head, a memory and a processor. The printing head performs printing with respect to a nail surface. Based on a program stored in the memory, the processor determines whether a printing operation of the printing head satisfies a preset condition. If the processor determines that the printing operation of the printing head satisfies the preset condition, the processor continuously performs the printing operation. If the processor determines that the printing operation of the printing head does not satisfy the preset condition, the processor performs error handling processing which is different from the printing operation.