The present disclosure relates to a reciprocating compressor and a method for assembling the same. According to an embodiment of the present disclosure, a reciprocating compressor includes: a shell to which a discharge pipe is coupled; a driving unit mounted inside the shell to generate a rotary force; a compression unit having a connecting rod configured to convert the rotary force to a straight driving force, a piston connected to the connecting rod, and a cylinder into which the piston is movably inserted; a discharge hose from which a refrigerant compressed in the cylinder is discharged, and disposed to abut an inner circumferential surface of the shell; and a connection member configured to connect the discharge hose to the discharge pipe, wherein at least a portion of the connection member is inserted into an inner portion of the discharge pipe, and another portion thereof is supported outside the discharge pipe.