The invention relates to an intelligent drying and rust removing all-in-one machine used for the inner wall of an oil pipeline. The intelligent drying and rust removing all-in-one machine comprises an inner wall drying device. The inner wall drying device can achieve the fast drying function of the pipeline inner wall. Local fast drying can be performed according to the practical situation of the pipeline inner wall, and the applied range is wide. An inner wall rust removing device is installed at the right side of the inner wall drying device. The inner wall rust removing device can achieve the functions of fast impurity scraping and rust removal polishing on the pipeline inner wall. Travelling branched chains are welded to the left end of the inner wall drying device and the right end of the inner wall rust removing device correspondingly. The intelligent drying and rust removing all-in-one machine can walk on the pipeline inner wall through the two travelling branched chains. The two travelling branched chains comprise L-shaped travelling support pillars. The two L-shaped travelling support pillars on the two travelling branched chains are welded to the inner wall drying device and the inner wall rust removing device correspondingly. Travelling base plates are welded to the tail ends of the L-shaped travelling support pillars. According to the intelligent drying and rust removing all-in-one machine, the continuous and stable rust removing and drying functions of the oil pipeline inner wall can be achieved, the treatment speed of the pipeline inner wall is high, and treatment efficiency of the pipeline inner wall is also high.