The Ru-based thick film resistor(TFR) for sintering at 90$0^{circ}C$ was synthesized to prepare the LCR net-work. These compositions of pyrochlore could be prepared by decreasing the amount of PbO and increasing alumina and silica contents of glass frit. In this study, the sheet resistances of the TFTs. which sint-ered at 90$0^{circ}C$ after printing on alumina substrate, the sheet resistances of the TFRs on inductor and capa-citor substrate and the interphase between TFR and substrate were observed. And the changes of the sheet resistance were obtained with the contents of RuO2. In case of the TFR sintered at 90$0^{circ}C$, the sheet resis-tances on alumina substrates were in the range of 103~106$Omega$/$square$, but the sheet resistances of TFR on in-ductor and capacitor substrate were not obtained.