The invention provides a method for cooling continuous casting blanks, which comprises the step of cooling casting blanks through spray cooling areas, and is characterized in that: the number of the spray cooling areas is at least three; the casting blanks continuously pass through the at least three spray cooling areas; and according to an order in which the casting blanks pass, temperature reduction values of the casting blanks in each spraying cooling area are gradually reduced. The invention also provides a method for producing continuous casting billets, which comprises the following steps: casting molten steel into the casting blanks; and then cooling the obtained casting blanks, wherein the method for the cooling in the second step is the method for cooling the continuous casting blanks provided by the invention. The continuous casting billets produced by the method for cooling the continuous casting blanks and the method for producing the continuous casting billets of the invention have no surface cracks and internal cracks and also have little centre porosity and little centre segregation.