The invention relates to an automatic paper paving machine, comprising an unreeling mechanism and a paper conveying mechanism, wherein the output end of the unreeling mechanism is connected with the paper conveying mechanism; the output end of the paper conveying mechanism is connected with a lifting platform; a blowing mechanism is arranged at the output end of the paper conveying mechanism; a paper cutting mechanism is arranged above the blowing mechanism; the paper conveying mechanism comprises a paper sheet thickness adjusting device. According to the automatic paper paving machine with the structure, a drive roller and a driven roller in the paper conveying mechanism are good in a pressing effect, paper sheets conveyed are flat and do not easily deflect, the paper paving precision is high, the driven roller and the drive roller can automatically adapt to the paper sheets with different thickness through a spring, and the universality is strong; the lifting platform is integrated with the paper conveying mechanism, the space is greatly saved, the blowing mechanism is used for assisting in conveying the paper sheets and preventing the paper sheets from flying up or stopping; a paper knife in the paper cutting mechanism is circular, the cutting is very rapid, and the cutting edge of the paper knife is lower than the surfaces of the paper sheets, so that two edges of the paper sheets can be completely cut off.