PURPOSE: To provide a comfortableness at the time of sleeping and quicken one's first sleep.

CONSTITUTION: A heating wire 3 in a blanket body 1 is distributed closely in the foot part and coarsely in the center part. A detecting wire 4 is distributed closely in the breast and coarsely in the end part. The body temperature is detected through the blanket cloth by the detecting line 4, and the electrification to the heating wire 3 is controlled through a control means 5 to provide a comfortable bed interlocked with the body temperature.