The invention relates to the technical field of oil extracting engineering, and belongs to a split type anti-sand blocking casing collar positioner. The split type anti-sand blocking casing collar positioner effectively solves the problems that common casing collar locators cannot be adjusted in positioning force, has poor fraction resistance and cannot prevent sand blocking. The split type anti-sand blocking casing collar positioner is composed of a central pipe (1), a positioning sleeve (2), anti-rotating pins (3), a positioning block (4) and a lower blocking ring (5), wherein the central pipe (1) is sleeved with positioning sleeve (2), and the positioning sleeve is fixed through the anti-rotating pin (3), the positioning block (4) is put in the positioning sleeve (2) and is connected through the anti-rotating pin (3), the lower blocking ring (5) is connected to the tail end of the central pipe (1) through screw threads and is fixed through the anti-rotating pin (3), and the positioning sleeve (2) is connected with the lower blocking ring (5) in a contacting mode. The split type anti-sand blocking casing collar positioner has the advantages of being good in friction resistance, capable of achieving the replaceable positioning block and high in sand discharging function, and the like.