Boron(B)is an essential micro-nutrient for crops，but the effects of B fertilizer application on the yield and quality of rapeseed，soybean and flue-cured tobacco in China are not clear in recent 20 years. In this study，172 literatures were collected and the effects of B fertilizer on the yield and quality of above selected crops were studied by meta-analysis. The results showed that B fertilizer increased the yield of rapeseed，soybean and flue-cured tobacco by 14.26% in average，and the increasing rate of yield of B fertilizer on the rapeseed was significantly higher than that of flue-cured tobacco and soybean. The recommended dosages of Borax in soybean，flue-cured tobacco and rapeseed were 10-15，20-30 and 0-10 kg/hm²，respectively. The increasing rate of yield of B fertilizer was higher in rapeseed than in flue-cured tobacco and soybean in East China，and higher in rapeseed than in flue-cured tobacco in Central China. The increasing rate of yield of B fertilizer on soybean，flue-cured tobacco and rapeseed changed with years. Since 2000，the increasing rate of yield of B fertilizer on soybean and flue-cured tobacco had gradually decreased，and that on rapeseed had gradually increased. B fertilizer increased the oil content and reduced the protein content of rapeseed greatly，but had no significant effect on soybean protein and fat content；it increased the nicotine content and the sugar content of flue-cured，while had no effect on the potassium-chloride ratio. The oil content of rapeseed in South China，the protein and fat content of soybean in Central China，and the reducing sugar content and potassium-chloride ratio of flue-cured tobacco in South China were higher than those on other growth regions. In addition，the oil content of rapeseed increased after 2000，while the quality parameters of other crops decreased. In summary，the application of B fertilizer can effectively improve the yield and some quality parameters of crops，however，the increasing rates are affected by other factors such as crop species，application rate，application period，and growth regions. Therefore，the B fertilizer application scheme should be formulated according to the grown regions，crops，soil types and the soil available B content in the agricultural production to guarantee the increase of crop yield and the improvement of grain(leaves)quality in China.