The kinetic experiments at various working conditions (ie, temperature: 500 degrees C-900 degrees C, pressure: 1-15 bar, H2O/CH4 ratio [S/C ratio] of 1-2.5, and gas hourly space velocity of 900-1700 1/h) in the presence of LaNiO3 perovskite-type oxide were done to consider and assess the outcome of steam methane reforming (SMR) and to build up its kinetic models depending on Langmuir-Hinshelwood method in a fixed bed reactor. The outcomes demonstrate, the methane conversion, H-2 and CO yields and formed CO2 are affected by the working parameters. Elevated temperature is profitable for more methane conversion, H-2 and CO yield. While high temperature has a negative effect on mol % of CO2 in outlet products. The high working pressure will not profit SMR respect to CH4 conversion and products distribution. The efficacy of S/C ratio on the CH4 conversion and CO yield depended on temperature range. H-2 yield considerably diminishes with an increment in S/C ratio, while the trend was reverse for CO2 value in outlet gas. The accuracy of suggested kinetic model was evaluated by correlation and statistical tests. Outcomes exhibited that the obtained data were well anticipated through the suggested model, owning to presumption of nonideal gas phase and by utilizing reasonable equation of state of PPR78.