The present invention relates to a sheet transport apparatus comprising; sheet transport means capable of conveying sheets at a transfer speed that is the same as a transfer speed α of sheet in an image forming position where an image is formed on the sheet, and at a transfer speed β that is faster than the transfer speed α, skew feeding correction means which corrects skew feeding of sheet conveyed by the sheet transport means and which feeds the sheet to the image forming position where the image is formed, and sheet interval control means for controlling a distance between a sheet and a next sheet by changing timing at which the transfer speed of the sheet is reduced from the transfer speed β to the transfer speed α at upstream side from the skew feeding correction means in a sheet conveying direction.