Provided is a composition for embryo culture, which contains a constitution suitable for embryo culture. Provided is a composition for embryo culture, which contains (a) a constitution shown in Table A below. TABLE A ComponentsmM L-Alanine0.297 ± 0.089 L-Asparagine0.015 ± 0.005 L-Aspartic acid0.120 ± 0.036 L-Glutamic acid0.550 ± 0.165 Glycine0.979 ± 0.294 L(−)-Proline0.105 ± 0.032 L-Serine0.176 ± 0.053 L(+)-Arginine0.108 ± 0.032 L(−)-Cystine0.048 ± 0.014 L-Histidine0.053 ± 0.016 L(+)-Isoleucine0.036 ± 0.011 L-Leucine0.081 ± 0.024 L(+)-Lysine0.176 ± 0.053 L-Methionine0.022 ± 0.007 L(−)-Phenylalanine0.045 ± 0.013 L(−)-Threonine0.109 ± 0.033 L-Tryptophan0.018 ± 0.005 L-Tyrosine0.048 ± 0.014 L-Valine0.108 ± 0.032 L-Glutamine or0.398 ± 0.119 glutamine derivative Taurine1.412 ± 0.424