The invention relates to an intelligent seal device and a control method thereof. The intelligent seal device comprises a device body provided with an inner cavity, a fixing frame connected to the inner cavity in a sliding manner, a control device fixed to the device body, and a linear drive device used for driving a seal or the fixing frame to move downwards, wherein the bottom of the device body is opened. The fixing frame is provided with a clamping structure used for clamping the seal. The control device is provided with a communicating module. The linear drive device is electrically connected with the control device. According to the intelligent seal device, use authority of a seal owner or a seal manager is obtained through the communicating module, the linear drive device drives the seal or the fixing frame to move downwards, thus, stamping action is completed, stamping can only be carried out one time through one time of authorization, and therefore, even under the circumstance that the seal owner or the seal manager is absent, the stamping situation can be controlled. The intelligent seal device is high in safety, convenient to manage and high in reliability.