1. A moving picture coding device adapted to code moving pictures in units of blocks obtained by partitioning each picture, comprising: an inter prediction information derivation unit configured to derive inter prediction information candidates from inter prediction information of prediction blocks neighboring a prediction block subject to coding or a prediction block that exists at the same position as or near a prediction block subject to coding in a coded picture that is different from the prediction block subject to coding; a candidate number setting unit configured to set the number that is set according to either a profile that indicates a group of processing functions or a level that indicates decoding processing ability as the number of the inter prediction information candidates; and a prediction unit configured to select an inter prediction information candidate from the set number of the inter prediction information candidates and to perform inter prediction of the prediction block subject to coding by the inter prediction information candidate thus selected.