An eddy fluid heat exchange comprising: a compound tube assembly (10a, 10b) comprising an outer tube; an inner tube (12a, 12b) mounted in the outer tube; an eddy passage formed between the outer tube and the inner tube (12a, 12b) and extending along an axis of the inner tube (12a, 12b), the outer tube having a guiding exit formed at an end of the eddy passage; an eddy guiding structure (20a, 20b) mounted at the compound tube assembly (10a, 10b), disposed at another end, which is opposite to the guiding exit, of the eddy passage; the eddy guiding structure (20a, 20b) having a guiding entrance (21a, 21b) connected to the eddy passage; and at least one eddy deflecting structure (30a, 30b) mounted in the eddy passage of the compound tube assembly (10a, 10b), spaced apart from the eddy guiding structure (20a, 20b), and having multiple spiral deflecting channels (31a, 31b) annularly disposed apart from each other; two ends of each one of the spiral deflecting channels (31a, 31b) respectively being an inlet end and an outlet end; the inlet end and the outlet end both respectively connected to the eddy passage; characterised in further comprising a bore of each one of the spiral deflecting channels (31a, 31b) gradually reducing in size from the inlet end to the outlet end; and wherein a high pressure fluid is fed into the guiding entrance (21a, 21b); after passing through the eddy guiding structure (20a, 20b), the high pressure fluid eddies and enters the eddy passage; the high pressure fluid eddies when passing through the multiple deflecting channels (31a, 31b) the high pressure fluid is discharged from the guiding exit after exchanging heat with the inner tube (12a, 12b) or the outer tube. a compound tube assembly (10a, 10b) comprising an outer tube; an inner tube (12a, 12b) mounted in the outer tube; an eddy passage formed between the outer tube and the inner tube (12a, 12b) and extending along an axis of the inner tube (12a, 12b), the outer tube having a guiding exit formed at an end of the eddy passage; an outer tube; an inner tube (12a, 12b) mounted in the outer tube; an eddy passage formed between the outer tube and the inner tube (12a, 12b) and extending along an axis of the inner tube (12a, 12b), the outer tube having a guiding exit formed at an end of the eddy passage; an eddy guiding structure (20a, 20b) mounted at the compound tube assembly (10a, 10b), disposed at another end, which is opposite to the guiding exit, of the eddy passage; the eddy guiding structure (20a, 20b) having a guiding entrance (21a, 21b) connected to the eddy passage; and at least one eddy deflecting structure (30a, 30b) mounted in the eddy passage of the compound tube assembly (10a, 10b), spaced apart from the eddy guiding structure (20a, 20b), and having multiple spiral deflecting channels (31a, 31b) annularly disposed apart from each other; two ends of each one of the spiral deflecting channels (31a, 31b) respectively being an inlet end and an outlet end; the inlet end and the outlet end both respectively connected to the eddy passage; characterised in further comprising a bore of each one of the spiral deflecting channels (31a, 31b) gradually reducing in size from the inlet end to the outlet end; and a guiding entrance (21a, 21b) connected to the eddy passage; and at least one eddy deflecting structure (30a, 30b) mounted in the eddy passage of the compound tube assembly (10a, 10b), spaced apart from the eddy guiding structure (20a, 20b), and having multiple spiral deflecting channels (31a, 31b) annularly disposed apart from each other; two ends of each one of the spiral deflecting channels (31a, 31b) respectively being an inlet end and an outlet end; the inlet end and the outlet end both respectively connected to the eddy passage; characterised in further comprising a bore of each one of the spiral deflecting channels (31a, 31b) gradually reducing in size from the inlet end to the outlet end; and wherein a high pressure fluid is fed into the guiding entrance (21a, 21b); after passing through the eddy guiding structure (20a, 20b), the high pressure fluid eddies and enters the eddy passage; the high pressure fluid eddies when passing through the multiple deflecting channels (31a, 31b) the high pressure fluid is discharged from the guiding exit after exchanging heat with the inner tube (12a, 12b) or the outer tube.