The different between Complete Blood Count (C.B.C) and Blood Glucose after shallow 10m and deep 30m in SCUBA Diving Training were investigated on 10 healthy sport adventure recreational Scuba Divers male age 21-23 year .C.B.C and Blood Glucose were measured by hematology analyzers and Digital Blood Glucose Meter at 5-10 min pre-dive, and immediately post-dive in blood analysis labor in south Sinai in Egypt before and after 10m for 30 min Actual bottom time (ABT), and after 30m shore Diving for 18 actual bottom time (ABT) All dive from 30-40min total bottom time (TBT). Results: Were describe the significant between CBC variables pre-post diving ; Hemoglobin (Hgb) g/dL pre and post 10m diving (13.7 ± 1.03, 13.05 ± 1.0), (Hgb) g/dL pre and post 30m diving (14.2 ± 0.94, 13.5± 1.02), Red blood cell (RBC) pre and post 10m diving (4.8 ± 0.36 , 4.16 ± 0), (RBC) pre and post 30m diving (4.9 ± 0.33, 4.8± 0.45), Mean corpuscular volume (MCV) fL pre and post 10m diving (90.8 ± 6.8, 86.1 ± 6.6), (MCV) fL pre and post 30m diving (93.6 ± 6.1, 89.1 ± 6.8), Mean corpuscular hemoglobin (MCH) pg pre and post 10m diving (28.8 ± 2.1, 27.3 ± 2.1), (MCH) pg pre and post 30m diving (29.7 ± 1.9, 28.3 ± 2.1), Mean corpuscular hemoglobin concentration (MCHC) g/dL pre and post 10m diving (33.025 ± 2.4, 31.2 ± 2.4), (MCHC) g/dL pre and post 30m diving (34.05 ± 2.26, 32.37 ± 2.43), Total Leucocytes count ul pre and post 10m diving (5.05 ± 1.3, 5.5 ± 1.4),pre and post 30m diving (6.1 ± 1.41, 6.2 ± 1.38), Platelet /uL pre and post 10m diving (227.5 ± 9, 233.7 ± 23.2), pre and post 30m diving (230 ± 16.9, 237.5 ±19.5), Blood Glucose between pre and post 10m diving (100.5 ±10.4, 87.5 ± 5.31) and pre and post 30m diving (92.5 ± 7.12 , 82.2 ± 76). Conclusions: Similar pre- to post-dive reductions in blood glucose and change in C.B.C were seen with both 10m and 30m dives. 10m diving is useful and healthy than 30m. Divers blood Glucose my reduce at 10m diving because diver used continuously training, HI my reduce at 30m diving. That means can continual research for the treatment diabetes in underwater field, also 10m safely than 30m for recreation SCUBA Divers. We can manage C.B.C measurements to avoid anemia for divers, and manage Glucose to avoid hypoglycemia or low blood sugar during routine recreational dives under ordinary environmental conditions and low risk decompression profiles.