To provide a shift control device for an automatic transmission, eliminating the possibility of occurrence of burning of a friction material due to excessive heat generation in a friction engagement element by precisely detecting a torque phase during shifting, and accurately determining an end of a piston stroke when upshifting by grip change.

A strain gauge 24 and a torque value calculating means 16 detect a torque value that acts on a sun gear S1 based on reaction force. A torque phase detecting means 15 detects the start of a torque phase at which only a torque distribution changes while a gear ratio stays at the same level as before upshift based on a change in the value for torque detected by the strain gauge and the torque value calculating means. When upshifting by grip change is made, therefore, the end of a piston stroke is accurately determined by precisely detecting the torque phase during the shifting. Thus, problems such as burning of the friction material due to excessive heat generation in the friction engagement element is eliminated.