Abstract: To explore the effects of organic materials on the improvement of coastal saline soil, cow dung, vinegar grains, edible fungi residue and plant crushing waste were selected as materials. 14 kinds of proportions were set for saline soil treatment, and Lonicera maackii were planted for growth test, and the total salt content and pH of soil were determined regularly. The results showed that organic materials had different effects on the improvement of soil salt content and pH, in which, the vinegar residue, mushroom residue and green crushing waste mixed with a small amount of organic fertilizer, i.e. cow manure∶vinegar residue∶mushroom residue∶green crushing waste was 1∶3∶3∶3（volume rato）, which had better effect on soil improvement, and the maximum growth of Lonicera maackii could be obtained under this condition. In evaluating the effect of soil improvement, the growth index（plant height, crown width） is more representative than the physiological index （chlorophyll index and net photosynthetic rate）.

Key words: organic materials, coastal saline soil, improvement, Lonicera maackii, vinegar grains, edible fungi residue, green crushing waste