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Through analyzing requirements of injection control of high pressure common rail diesel engine, the air intake system had obvious hysteresis in the changing speed. And this kind of hysteretic performance was represented that the increment of the intake-air could not obviously keep pace with the increment of the injection. Thus, the designed correction algorithm of main injection quantity for changing speed could newly modify the original main injection fuel quantity, and obtain the reasonable air-fuel ratio and optimize the combustion process. For the fluctuation of common rail pressure was caused by the multiple injection, the fuel correction algorithm of multiple injection for common rail pressure fluctuation could pre-rectify the fuel injection pulse width and improve the injection accuracy, which were realized by using the ASCET modeling software tools of ETAS company and the independently developed ECU circuit board. After calibration experiment of the engine on YN33CR high pressure common rail diesel engine, such as starting and idling condition test, main injection quantity correction test of changing speed, fuel correction test of multiple injection for rail pressure fluctuation, constant torque and increasing speed mode test, constant speed and increasing torque mode test, the results showed that the fuel injection control strategies achieved the expected results and it can effectively improve the injection control.