A two-liquid mixing type minute amount injector comprises a head part, a first chemical liquid supply device, a second chemical liquid supply device, a rotary mixer, a driving motor and a moving device. The head part has a drive shaft therein. The first chemical liquid supply device is provided with a screw pump, a chemical liquid container and a first liquid injection head tip. The second chemical liquid supply device is provided with a screw pump, a chemical liquid container and a second liquid injection head tip. The rotary mixer has a mixing rotor therein and the side of the rotary mixer is provided with a first joint port and a second joint port. The first joint port can be correspondingly joined with the first liquid injection head tip for communication and the second joint port can be correspondingly joined with the second liquid injection head tip for communication. The driving motor is used to be coupled with the drive shaft. The moving device is connected with the first chemical liquid supply device and the second chemical liquid supply device. By the moving device driving the first chemical liquid supply device and the second chemical liquid supply device to move toward the head part direction and allowing the first joint port and the second joint port to be respectively joined and communicated with the first liquid injection head tip and the second liquid injection head tip, the screw pumps of the first and the second chemical liquid supply devices respectively form a flow path of chemical liquid with the interior of the rotary mixer, so that two kinds of chemical liquid are input into the rotary mixer to be mixed by the mixing rotor.一種微量用二液混合型注入機,包括一頭部、一第一藥液供給裝置、一第二藥液供給裝置、一旋轉混合器、一驅動馬達及一移動裝置。頭部內有一驅動軸;第一藥液供給裝置具有一螺桿泵、一藥液容器及一第一注液頭端;第二藥液供給裝置具有一螺桿泵、一藥液容器及一第二注液頭端;旋轉混合器內有一混合轉子,旋轉混合器的側面設有一第一接口及一第二接口,第一接口可對應與第一注液頭端接合導通,第二接口則可對應與第二注液頭端接合導通;驅動馬達用以連動驅動軸;移動裝置連結第一藥液供給裝置及第二藥液供給裝置。藉由移動裝置驅使第一藥液供給裝置及第二藥液供給裝置向頭部方向移動,並使第一接口、第二接口分別與第一注液頭端及第二注液頭端接合導通後,第一及第二藥液供給裝置之螺桿泵則分別與旋轉混合器
