1. A shift control apparatus of an automatic transmission, comprising: a shift point learning-correcting unit that executes learning-correction of a shift point during an upshift such that an input rotational speed of the automatic transmission reaches a predetermined target maximum rotational speed; and a high acceleration time upshifting unit that executes, when predetermined high acceleration is requested, an upshift control based on the shift point in which a learning value of the shift point learning-correcting unit is reflected, wherein: when the high acceleration is not requested, the upshift control is executed based on a reference value of the shift point, which does not reflect the learning value of the shift point learning-correcting unit; and the shift point learning-correcting unit executes the learning-correction of the shift point when the learning value is reflected in the upshift control.