Abstract: The present invention is provided to a heat mattress for bed having springs and heating wire which are electrically connected to an electric source for heating, which comprises a container located between the springs and containing a binding post to supply electric power to the heating wire; and a shield located between the wires and the mattress and made of at least one of shield net or carbon fiber to shield electromagnetic waves. According to the present invention, an advantage of the present invention is that the binding post is located inside for the electromagnetic waves not to be reached at the user.