The invention discloses an anti-interference switching value transmission circuit. A changeover contact is adopted as a signal terminal, wherein a normally closed contact is connected to the negative pole of a switching value DC (Direct Current), a normally opened contact is connected to the positive pole of the switching value DC, and a common terminal is connected to a switching value collection loop; when no signals exist, the negative pole of the DC is connected with the positive input end of the switching value collection loop through the normally closed contact; since the negative input end of the switching value collection loop is also connected with the negative pole of the DC, even if interference enters, no false signal is generated; and when signals exist, the position of the changeover contact is changed, the positive pole of the DC is connected with the negative pole of the DC through the closed normally opened contact and the switching value collection loop so as to form a loop, so that the signals can be reflected. According to the anti-interference switching value transmission circuit, when no signals exist, two ends of the collection loop are connected to the negative pole of the switching value DC, so that the interference problem is solved.