本文对大半径敷介质导体圆柱表面共形缝隙天线作了实验研究。实验模型为十单元周向线阵，单元分别用屏蔽带线缝隙和矩形波导缝隙．包括等间隔阵和用缩短馈线的方法补偿了往面引起的射线路程差的不等间隔阵，实测方向图大致趋势与计算结果一致。结果表明，缩短馈线的补偿方法对降低旁瓣有效。 In this paper, a large radius of dielectric conductor cylindrical surface conformal slot antenna made an experimental study. Experimental model for the ten-unit circumferential line array, the unit were used to shield the gap with a rectangular waveguide slot and slit. Including the equidistant array and shortening the feeder method to compensate for the front caused by the unequal interval array of ray path difference, the actual trend of the measured pattern is consistent with the calculated results. The results show that reducing the feeder compensation method to reduce the sidelobe effective.