The invention discloses a bulk curing barn temperature and humidity sensing line capable of resisting frequency converter interference. The bulk curing barn temperature and humidity sensing line comprises a connection terminal, a black heat-shrinkable tubing, a first deconcentrator, a six-core grey sheathed line, a second deconcentrator, a four-core grey sheathed line, a three-core grey sheathed line, a lower shed chip, an upper shed chip and a frequency converter interference processing unit, and the frequency converter interference processing unit is externally arranged on a circuit board which is connected with the sensing line. Through the simple frequency converter interference processing unit, the problem that conducted interference from a frequency converter is generated in the curing process of the curing barn can be solved, and the sensing line is simple, easy to use and obvious in effect.