Quadricyclane is a liquid fuel with high strain caged structure.The gas chromatography mass spectrometer, fourier transform infrared spectroscopy and nuclear magnetic resonance spectrometer were used to characterize the molecular structure of quadricyclane, which was synthesized by photoisomerization. The pyrolysis products of quadricyclane at 300-800 ℃ were analyzed by pyrolysis gas chromatography mass spectrometer. Results show that the molecular structure of the synthesized quadricyclane is consistent with theoretical structure. The purity of quadricyclane is 94%, calculated by gas chromatography normalization. Some gasification products and their isomers are founded when the temperature is below 400 ℃. When the temperature is 500-650 ℃, the pyrolysis products are mostly cyclic olefins. With the increase of temperature, the pyrolysis products turn from cyclic olefins to benzene homologues. When the temperature is above 750 ℃, the pyrolysis products change to biphenyls and polycyclic aromatic hydrocarbon compounds.