Currently, carbon fiber and silver-coated yarn are the most common materials to produce thermal fabric, while stainless steel yarn is still rare to use. Limited research can be found about thermal fabric applied in stainless steel yarn (SSY). In this study, two kinds of conductive path are designed and fabricated to evaluate the heating effect. PVA water soluble yarn is also adopted into the fabrication to reduce the damage during weaving. Results show that conductive path in wider width has better thermal performance. Fabric length reduction can raise the temperature more effectively compared to fabric width reduction.