Abstract: This study had measured the length, width and content of water of different leaf arrangement of oil palm, and analyzed the change rules of them. The results showed that the change rule of length of NO. 8 leaf to NO.26 leaf was accordant, while their width had not change rules. The length of NO.16 leaf and the width of NO.18 leaf were adjacent among the three oil palm tree. But the ratio of leaf length to width had not ruler, changed among 17.6 to 33.5. The change of leaf water content was consistent in different oil palm leaves. And the water content of NO.16 to NO.18 leaf was the highest, which were from 59.4% to 64.6%. And the water content of young leaves was higher than the old leaves’.