To meet the requirements of precision rice directseeder and linear and holey sowing of the seeds lining and holing in the operation of field seeding , a precision hilldirectseeding seed metering device with spiral slots and hookspoons was developed to improve the current situation of labor .The movement track of spiral slot inner sprouting rice seed was analyzed in the process of seedsowing by means of the Matlab software, as well as rotational quadratic orthogonal experiments was used to further analyze the effects of the rate of average hill diameter, the rate of seeds’ number in the hill and leakseeding rate on seeding performance: rotation speed, working length of spiral sheave and lead angle. The JPS-12 detecting and experimental set of seed metering device was selected to test sowing performance. Experimental data was analyzed by Design-Expert software so as to establish the mathematical model between the experimental factors and experimental indexes. The result showed that the best operational parameter combination was lead angle of 71.0°, working length of spiral sheave of 10.8mm, and the rotation speed of 23.2r/min. The correct rate of average hill diameter was 91.06%, the correct rate of seeds’ number in the hill was 94.64% and the leakageseeding rate was 3.64%. The sowing performance can meet the requirement of rice planting in the operation of field.