A process for producing (meth)acrylic acid, comprising the step of repeating a crystallization operation “n” times (providing “n” is an integer 2 or more) to produce purified (meth)acrylic acid from crude (meth)acrylic acid, wherein a (meth)acrylic acid solution is crystallized and the crystallized (meth)acrylic acid is melted to obtain a (meth)acrylic acid melt in the crystallization operation; wherein a constant amount Ak of the (meth)acrylic acid solution is subjected to the kth crystallization operation (providing “k” is an integer 1 to n−1), and the (meth)acrylic acid melt obtained by the kth crystallization operation is utilized as the (meth)acrylic acid solution for the k+1th crystallization operation without being discharged from a crystallizer or is transferred from the crystallizer to a k+1th storage tank for storing the (meth)acrylic acid solution to be used in the k+1th crystallization operation depending on the stored amount of the k+1th storage tank.