The purpose of the present invention is to provide a novel nystose crystal containing powder that is suppressed from being stirred up and that has flowability suitable for handling and a method for producing said powder. The present invention provides a nystose crystal containing powder wherein: (a) the content by percentage of nystose is 71 90 wt% (b) said powder includes 0.2 18.6 wt% of gluconic acid with respect to the total weight of the nystose crystal and (c) said powder has a moisture content of 7 14 wt%. Also the present invention provides a method for producing the present nystose crystal containing powder the method comprising: step (A) for producing nystose by the reaction of sucrose and an enzyme solution including ß fructofuranosidase and glucose oxidase step (B) for converting glucose in the reaction solution into gluconic acid with the glucose oxidase step (C) for adjusting the gluconic acid content in the solution obtained by steps (A) and (B) to 0.1 20 wt% step (D) for obtaining a nystose crystal from the solution obtained by step (C) and step (E) for adjusting the moisture content of the nystose crystal obtained by step (D).
