Provided are a sheet feeding device with improved separating/feeding performance. The sheet feeding device includes a sheet storage portion, a pickup roller which feeds the sheet, a driving motor which rotates the pickup roller, a feed roller and a separating roller which separate and feed the sheet, and a drive transmission mechanism which when the pickup roller abuts on the surface of the sheet accommodated in the sheet storage portion to feed the sheet, allows the pickup roller to perform intermittent rotation that alternately perform rotation and stop twice or more while one sheet is fed. The drive transmission mechanism is connected to the driving motor and includes an input gear having a plurality of protrusions and a regulating portion which is engaged with the protrusions of the input gear to regulate the rotation of the input gear.