The invention relates to the field of robots, and particularly relates to a computer-controlled crawling robot. The computer-controlled crawling robot comprises a main frame, crawling wheels, supporting wheels, a walking motor and a power source, and further comprises a rotating crank arm, a clamping crank arm, a telescopic auxiliary wheel frame, a telescopic locking device, a crank arm angle adjusting mechanism, a tensioning mechanism and an adjusting motor, wherein the main frame comprises a crawling wheel seat, a main plate, a crank arm seat, a mounting plate, a hook frame I, a motor mounting plate and a limiting frame; the crawling wheels comprise walking wheels, belt wheels and rotating shafts; the rotating crank arm comprises a crank arm I, a supporting shaft, an adjusting linkage seat, a hook plate I, a tension spring and a connecting seat; the clamping crank arm comprises a crank arm II, a clamping rotating shaft, a hook plate II, a sliding groove and a locking groove; the telescopic auxiliary wheel frame comprises an auxiliary wheel, a telescopic arm, a clamping plate and a T-shaped sliding groove; and the telescopic locking device comprises a locking plate, a pressing plate, a sliding column and a pressure spring. The computer-controlled crawling robot can adapt to pipelines with different outer diameters in a large range and is high in practicability.