Based　on　the　ultimate　tensile　strain　model,　the　thermal　strain　model,　the　shrinkage　strain　model,　the　creep　strain　model　of　early　age　concrete,　and　the　restraint　coefficient,　an　algorithm　is　proposed　in　this　paper　to　calculate　the　restraint　strain　of　the　early　age　concrete.　The　strain　criterion,　namely　comparing　the　restraint　strain　with　the　ultimate　strain,　is　used　to　predict　the　early　age　cracking　of　bridge　barrier　walls.　An　example　is　provided　to　illustrate　the　procedure　of　predicting　the　early　age　cracking　of　the　bridge　barrier　walls.　This　paper　summarizes　the　control　methods　of　the　early　age　cracking　of　the　bridge　barrier　walls　according　to　the　proposed　prediction　methods.