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Based on the two-phase flow cavitation model, a numerical model of the thermohydrodynamic lubrication of spiral-oil wedge hybrid journal bearing was built up. By using finite differential method, the generalized Reynolds equation, simplified energy equation of oil film and heat conduction equation of the bush were solved. The pressure distribution of oil film and the influences of supply temperature and supply pressure on bush inner surface temperature were carried out. The results indicated that rupture area of oil film initially increased, then decreased. The rupture location in circumferential direction moved a distance which related to spiral angle. Supply temperature had a great effect on the bush inner surface temperature distribution, but contrarily, supply pressure had a little effect.