The present invention provides a single use intravenous therapy administering device with needle safety covers, which comprises: a therapy feed needle module, a dripping chamber, a flow regulator, a filter and an administering needle module. In which, the medicine to be infused is flowed from the therapy feed needle module to the therapy administering module through an intravenous infusing pipe. A colored solution is flowed from the therapy feed needle module to the filter through another usage indication pipe. The therapy feed needle module and the therapy administering module may be configured with "used" expression. Thus, the user may recognize if the therapy administering device has been used by interpreting the "used" expression and the colored solution. The therapy feed needle module and the therapy administering needle module may also be respectively provided with safety covers, so as to prevent the exposed needle after usage from accidentally contacting the user.一種具有針頭安全蓋之一次性靜脈給藥注射器,其包括有:一入藥針頭模組、一點滴腔、一流量調節器、一濾液器以及一給藥針頭模組。其中,待注射的藥物可藉由一靜脈注入管線由入藥針頭模組流至給藥針頭模組。一有色溶液可藉由另一使用指示管線由入藥針頭模組流至濾液器。入藥針頭模組與給藥針頭模組上可設置有已使用字樣,藉此,使用者可經由判讀上述之已使用字樣與有色溶液,得知該注射器是否已被使用過。入藥針頭模組與給藥針頭模組上亦可各自具有安全蓋,藉此避免使用後曝露出的針頭誤觸使用者。100...具有針頭安全蓋之一次性靜脈給藥注射器110...靜脈注入管線120...使用指示管線121...使用止擋線200...入藥針頭模組300...點滴腔400...濾液器500...給藥針頭模組600...流量調節器