NEGATIVE PRESSURE SUCTION-BASED FIXING DEVICE

Disclosed is a negative pressure suction-based fixing device comprising a housing, a suction and holding member, a negative pressure creating assembly, a solar panel and a battery; wherein, the housing may have an accommodating cavity thereinside; the suction and holding member may be suctioned onto a suction surface; an end of the suction and holding member away from the housing may be provided with a suction cavity that is in communication with the accommodating cavity; the suction cavity may cooperate with the suction surface to form an enclosed space; the negative pressure creating assembly may be configured to generate negative pressure in the accommodating cavity to create negative pressure in the enclosed space; the solar panel may be disposed on the housing. In this way, the negative pressure suction-based fixing device can continuously supply power to the battery through the solar panel.