Provided are a solid food, a compression molded body of a food powder, a solid milk, and a compression molded body of a powdered milk which can be produced with improved production efficiency while securing resistance to breakage. A solid food is a solid food having a solid form obtained by compression molding a food powder, in which a packing fraction of the solid food is configured such that an average value A from a surface of the solid food to a depth of 2 mm is larger than an average value C from a depth of 4 mm from the surface of the solid food to a depth of 6 mm, and a rate of increase (A - C)/C × 100 of the packing fraction obtained by dividing a difference (A - C) between the average value A and the average value C by the average value C is 6.5% or less.