The utility model provides a split type connecting rod for a refrigeration compressor. The split type connecting rod comprises a big annular column and a connecting rod body. The outer side of the big annular column is provided with a U-shaped socket portion in an integrated mode. The U-shaped socket portion is provided with pin column through holes and a pin hole which is perpendicularly communicated with the pin column through holes. Two ends of the connecting rod body are respectively provided with a small annular column and a plug, and the plug is provided with a horizontal through hole and is arranged inside the U-shaped socket portion. A connecting rod pin column penetrates through the pin column through holes of the U-shaped socket portion and the horizontal through hole of the plug to connect the big annular column with the connecting rod body. The connecting rod pin column is in loose fit with the horizontal through hole in a connecting mode. A pin plug-in hole is disposed in the connecting rod pin column near one end portion of the connecting rod pin column. An elastic locating pin penetrates through the pin hole of the U-shaped socket portion and the pin plug-in hole of the connecting rod pin column in sequence and fixes the connecting rod pin column on the U-shaped socket portion. The elastic locating pin is in interference fit with the pin hole in a connecting mode. The split type connecting rod is installed in the refrigeration compressor, can optimize linkage of a piston, the connecting rod and a crank shaft, and has the advantages of reducing frictional wear of moving parts, improving energy utilization rate of the compressor and prolonging the service life of the compressor.