This retrospective study was aimed to assessing clinical, paraclinical symptoms of 340 patients between 16-45 years old, with Dengue haemorrhagic fever. Patients were divided into 2 groups with and without Dengue Shock Syndrome (DSS). The results showed that clinical symptoms including sudden high fever, headache, orbital pain, congested skin, petechie, and positive tourniquet test. Paraclinical symptoms included thrombocytopenia increased haematocrite, leukopenia, increased serum transaminases. This disease often occurred in October and November. DSS can occure at 4th to 7th day with symptoms vomiting, sudden subsided fever, cold clammy skin, pleural or pericardial effusion, ascites, rapid increased haematocrite, thrombocytopenia, leukopenia. Dengue haemorrhagic fever can be cured in short time with infusion of isotonic fluid and Ringer lactate fluid