Nowadays the chemical industry has not been able to develop its current state only on the basis of non-catalytic reactions, and due to the rapid development of the industry, the use of catalysts and their optimization have been considered. The main goals in this study are divided into two parts: (1) Making and characterizing the nickel catalyst on the porous alumina base; and (2) creating a porous layer of carbon fiber on the aluminous base to increase the surface and position of the nickel catalyst particles among them (improving the surface properties of the catalytic base using carbon fiber). First, the alumina base inside the dilute solution was 0.25 N for 24 hours and then dried. Then, in order to create catalytic nickel particles on the base, it was immersed in a Ni(NO3) 2 .6H 2 O solution with different concentrations of 1, 5 and 10% Nickel nitrate for 1 hour under ultrasonics. The samples were dried and subjected to calcination processes at 400 ? and reduction at 600 ?. Then, a catalyst has been developed and evaluated in two ways to create carbon nano-fibers and reduction of para-nitrophenol. The results showed that the amount of nickel applied on the catalytic base had a significant effect on the catalyst activity, so that the catalyst with 5% of nickel nitrate had a higher activity than the catalysts with 1 and 10% Nickel nitrate. In the second part, in order to increase the Area, the creation of carbon nano-fibers on nickel catalyst particles at 700 ? for different time period was used, which resulted in the increase in the catalyst activity as the carbon content of the catalyst increased, for this reason, a carbon-bed catalyst for 2 hours was used as a base for coating nickel particles on it. The sample again was put into a solution of 5% nickel nitrate and was placed in solution for 1 hour with the stirrer and then dried and, as described above, was subjected to calcination and reduction. Again, the catalyst was evaluated by rreduction of para-nitrophenol. The results of this evaluation showed that catalyst activity has increased. Therefore, in view of these results, it can be concluded that the catalyst with 5% nickel weight, which is applied to the carburization process for 2 hours, and then the coating of 5% by weight of nickel is applied, has the highest activity. Therefore, in this study, the effect of the amount of catalyst particles applied and the level of base contact with catalyst particles in the catalyst activity can be found Keywords: Nickel catalyst, Alumina base catalyst, Imptegnation method, Thermal decomposition, Reduction with hydrogen