The invention discloses a space-activity-track generating method and device. The space-activity-track generating method includes the steps that it is determined that a local machine is in the off-line state in which geographical location information can not be obtained; movement sensing data which is generated by an aspect sensor and used for representing spatial position variation of the local machine is obtained; according to the movement sensing data of one or more aspect sensors, one or more primary tracks are generated; after the local machine is recovered to be in the outer net accessing state, the multiple primary tracks are uploaded to a cloud-terminal server so that the multiple primary tracks can be fitted to spatial movement tracks when the local machine is in the off-line state. In addition, the invention further provides an intelligent device for carrying out the generating method. According to the method, the intelligent device is in the off-line state, the spatial movement tracks are generated according to the movement sensing data of the self-assembled aspect sensor of the intelligent device, the tracks generated with the method are accurate, reliable and suitable for various environments.