A die cushion device attachable to a press machine that automatically and repeatedly forms blank materials one by one, the die cushion device comprising a double blank detecting device, characterized in that, the die cushion device further comprises: a die cushion position detector (133L, 133R) configured to detect a position of a cushion pad and output a die cushion position signal indicating the position of the cushion pad; and a die cushion load detector configured to detect a die cushion load generated in the cushion pad and output a die cushion load signal indicating the die cushion load, the double blank detecting device comprising: a position signal acquiring unit configured to acquire the die cushion position signal from the die cushion position detector (133L, 133R); a load signal acquiring unit configured to acquire the die cushion load signal from the die cushion load detector; and a double blank detecting unit configured to detect, as a double blank, a state where a plurality of the blank materials are overlapped, based on the die cushion position signal acquired by the position signal acquiring unit, and the die cushion load signal acquired by the load signal acquiring unit, wherein the double blank detecting unit holds the die cushion position signal at a time point when the die cushion load signal rises to a predetermined value, compares a holding value of the held die cushion position signal with an abnormality identification value, and detects the double blank. a die cushion position detector (133L, 133R) configured to detect a position of a cushion pad and output a die cushion position signal indicating the position of the cushion pad; and a die cushion load detector configured to detect a die cushion load generated in the cushion pad and output a die cushion load signal indicating the die cushion load, the double blank detecting device comprising: a position signal acquiring unit configured to acquire the die cushion position signal from the die cushion position detector (133L, 133R); a load signal acquiring unit configured to acquire the die cushion load signal from the die cushion load detector; and a double blank detecting unit configured to detect, as a double blank, a state where a plurality of the blank materials are overlapped, based on the die cushion position signal acquired by the position signal acquiring unit, and the die cushion load signal acquired by the load signal acquiring unit, a position signal acquiring unit configured to acquire the die cushion position signal from the die cushion position detector (133L, 133R); a load signal acquiring unit configured to acquire the die cushion load signal from the die cushion load detector; and a double blank detecting unit configured to detect, as a double blank, a state where a plurality of the blank materials are overlapped, based on the die cushion position signal acquired by the position signal acquiring unit, and the die cushion load signal acquired by the load signal acquiring unit, wherein the double blank detecting unit holds the die cushion position signal at a time point when the die cushion load signal rises to a predetermined value, compares a holding value of the held die cushion position signal with an abnormality identification value, and detects the double blank.