This study was conducted for half a year, and we photographed the growth of Arachis duranensis at a frequency of 2 to 3 times a week. We obtained the height of the Arachis duranensis, the number of branches and the growth state of the leaf area by image analysis. The results showed that the Arachis duranensis grew about 0.25 cm/day, and grew one branch every 12 days. Although there is overlap between the leaves, in terms of direct analysis, the Arachis duranensis were produce a leaf area of 0.35 cm^2/day. This study uses simple image collection and image analysis to obtain plant growth information, which can be used in seedling growth in the future.