The utility model provides a device for automatic rising belongs to the automation equipment field, including cutting fork mechanism, power pack and connection power pack's controller, cut fork mechanism and include the platen, base plate and being located the first support and the second support of cross arrangement between platen and the base plate, said first support with the second support is articulated in the cross section, power pack includes motor and driving medium, said motor is connected the last face of said base plate, just said motor passes through said driving medium orders about the one end of first support and the one end of second support are followed synchronous and the anatrepsis of face of said base plate, the order said platen goes up and down. This device for automatic rising, simple structure, low in manufacturing cost, work is steady reliable, use this device for automatic rising and can slow down the tired sense that long-time use computer led to the fact, reduce the probability that the user suffers from cervical spondylopathy and lumbar vertebra disease, play therapeutical effect simultaneously