The effects of water-cement ratio on the tensile creep of early-age concrete under constant load were investigated. Creep and shrinkage of concrete under sealed curing condition was researched to determine the tensile basic creep of concrete. The results indicate that, as in compression, creep of concrete in tensile is very sensitive to water to cement ratio. The results also indicate that the tensile creep increases with the water to cement ratio. And that the tensile creep develops rapidly within the first day after loading.