Relationship of 8 characters, e.g.sowing period, sprouting period, budding period, flowering period, mature period and effective spikes per plant, grains per spike, 100-seed weight, yield per plot etc.were studied by means of path analysis. The result indicated correlation of sowing to sprouting period to blooming to maturing period were positve, the indirect effect of woing to sprouting period to blooming to maturing period were clearer than its direct effect, positive correlation of budding to blooming period to effective spikes per plant and grains per plant were highly significant, the indirect effect of budding to blooming period to effective spikes per plant and grains per plant were clearer than its direct effect, correlation of sprouting to budding period to 100-seed weight were positive, positive correlation of budding to blooming period to yield per plot were highly significant, the indirect effect of budding to blooming period to yield per plot were clearer than its direct effect, relationship of path of effective spikes per plant and grains per spike and 100-seed weight to yield per plot were real.