The non vacuum blood collection vessel is made of selected PS or PP materials. The inner wall of the test tube is silicified, smooth and free of blood. The serum is separated thoroughly with separation gel, and there is no fibrin filament in the serum; The anticoagulant is quantitatively and evenly atomized on the pipe wall, and the platelet protective solution is added to effectively prevent platelet aggregation, ensure the accuracy and reliability of the test results and high cost performance.