The present investigation was performed to assess the prevalence of periodontal conditions in pregnant women , to Identify the clinical signs of periodontal health and the exact stage of pregnancy at which gingival diseases arises and to study the relationship between gingival diseases and plaque accumulation in a group of pregnant sudanese women. One hundred pregnant women attending the department of Obstetrics and Gynaecology referral clinic at Ribat University Hospital (Khartoum State) were randomly selected as a study group. A group of 50 non-pregnant ladies of a matching age were selected from the co-patients as a control group. Clinical Periodontal examination was done for the selected females ( Child bearing age 18 to 35 years ). The result showed the following ; when the periodontal health for pregnant and non pregnant women were compared,There was an evident relation between pregnancy and Gingival index,Clinical attachment loss,Probable pocket depth,and Bleeding during brushing.