This study was carried out to evaluate the manufacturing characteristics of organic liquid fertilizer with poultry manure, soybean meal, and rice bran at plastic house in Chungbuk Agricultural Research and Extension Service. Treatment was given 3 treatments; poultry manure+soybean meal (PM+SM), poultry manure-rice bran (PM+RB), and soybean meal+rice bran (SM+RB). The obtained results from this study were summarized as follows; The pH in liquid fertilizer was consistently increased in PM+SM treatment, and was increased after decreased at early season in PM+RB and SM+RB treatments. The electriacl conductivity(EC) in liquid fertilizer was rapidly increased from 2nd weeks to 4th weeks after fermentation in PM+SM and PM+RB treatments, and was rapidly increased from 4th weeks to 6th weeks after fermentation in SM+RB treatment. The amount of H₂S gas occurrence was the highest as 1,200 ㎏ㆍ㎏⁻¹ in early season, and was the lowest as 50 ㎏ㆍ㎏⁻¹ at 12th weeks after fermentation of organic liquid fertilizer. The temperature of organic liquid fertilizer was stabilizing in 4th weeks after fermentation. The yield of well of nitrogen, phosphate, and potassium was increased with increasing fermentation periods. It was not change from 4th weeks after fermentation in content of calcium, magnesium and sodium in organic liquid fertilizer.