In order to obtain a rapid and accurate leaf area measurement method for vegetable seedlings，
this study took tomato seedlings as material and square method as the contrast，studied the accuracy，precision
and determining speed of 3 leaf area measurement methods，including scanning and analysis，leaf area meter and
leaf punch weighing. Afterwards，the obtained results were verified by cucumber leaves，pepper leaves and scraps
of paper. Finally based on varying scanning dpi levels，the screened methods were optimized. The results showed
that comparing with the leaf area meter method and leaf punch weighing method，data obtained from scanning and
analyzing method was closer to the real value with higher precision and less time consuming. Meanwhile，there was
no significant difference among results of scanning and analyzing method under different resolutions，while less
time needed for lower resolution. Therefore，the scanning and analyzing method of 50 dpi resolution can be used as
a rapid and accurate leaf area measurement method for vegetable seedlings.