【Objective】Based on climate change characters in Guangxi,the influence of different sowing periods on growth,yield and agronomic characters of spring maize were conducted. The optimal sowing period and varieties were determined, which provided theoretical basis for high yield and high efficiency production of spring maize in Guangxi. 【Method】In this study,the early maturity maize variety Qingqing 700 and late maturity maize variety Huayou 168 were used as experimental materials,and eight different sowing times(7 February,14 February,21 February,28 February,7 March,14 March,21 March and 28 March)were chosen. The meteorological data during maize growth period as well as various maize growth stages were recorded,and plant height,yield and yield components were also detected.【Result】In February,the temperature was low and the precipitation was few,so the maize seedling emergence took 17.3 days on average,which was slow. In March,the temperature and rain was suitable for maize seedling emergence,and it took 13.5 days on average for seedling emergence. With the delay of the sowing time,the total growth period was shortened. For every 7.0 d delay in sowing,the growth period was shortened by 3.9 d. The shortening of growth period was mainly manifested in seedling emergence to tasseling stage. The yield of early maturity variety Qingqing 700 was first increased with the delay of sowing time and then decreased,and the maximum yield appeared in 28 February sowing date treatment. The grain yield variation of late maturity Huayou 168 was not obvious among different sowing dates before 21 March,but grain yield decreased significantly in treatments later than 21 March(P<0.05). The effect of different sowing dates on plant height,grain yield,grain weight and grain number per ear was at different levels.【Conclusion】The temperature, light hours and rainfall are the main factors affecting the seedling emergence and growth of spring maize. With the delay of sowing time,the average daily temperature increases,the number of light hours decreases,and the growth period shortens. The grain yield of early maturity varieties is more greatly affected by the sowing date than late maturity varieties. The optimum sowing time for spring maize is from middle February to early March in Guangxi,and the suitable planting time for late maturity varieties can be extended to middle March.