The effect of strong exchange between nearest-neighbor atoms on magnetization of Blume-Capel model was studied by using effective field theory. The results show that the strong exchange interaction of the nearest neighbor and the crystal field compete with each other, which makes the system exhibit rich magnetic characteristics. The magnetic intensity of the system was enhanced by the positive crystal field, and only the second-order phase transition occurred in the system. The magnetization intensity of the system was suppressed by negative crystal field, and the first- and second-order phase transitions occurred in the system. Strong exchange interactions at different locations have different effects on the magnetization of the system.