An energetic Pb(Ⅱ) complex (Pb(TANPyO)) of 2, 4, 6-triamino-3, 5-dinitropyridine-1-oxide (TANPyO) was synthesized. The structure and properties were characterized by FT-IR spectroscopy, elemental analysis, TG-DTG and DSC, and the impact sensitivity, friction sensitivity and shock wave sensitivity were studied as well. The catalytic effect of Pb(TANPyO) on the thermal decomposition of ammonium perchlorate (AP) was analyzed by TG-DTG and DSC. Results show that the molecular formula of Pb(TANPyO) is Pb(C₅H₄N₆O₅). The impact sensitivity, friction sensitivity and shock wave sensitivity are 305 cm, 36 kg and 4.9 mm, respectively. Pb(TANPyO) has an exothermic peak with summit peak at 329.0 ℃ in the temperature range of 50-500 ℃ with 23.8% residues. Its apparent activation energy of exothermic decomposition reaction is 331.9 kJ·mol^-1. The Pb(TANPyO) has significant catalytic effect on the thermal decomposition of AP.