An injection preparation and a preparation method therefor, and a compatible medicinal liquid and a preparation method therefor. Upon performing tests, the provided injection preparation and compatible medicinal liquid thereof meet the requirements of long-term clinical trials and commercial production and sales. The injection preparation is a solution containing a compound of the following formula I, wherein the
solvent of the solution contains C2-C8
alcohol, and can also contain another cosolvent or solubilizer. The preferred injection preparation is a
mixed solution of DMA, ELP and
ethanol which contains 10 mg / ml of a compound of formula (I), wherein DMA is a cosolvent, and ELP is a solubilizer. For the ready-to-use injection (compatible medicinal liquid) of the compound of following formula (I), the
solvent thereof is water, the solute thereof comprises the compound of formula I, DMA, ELP,
ethanol, an isosmotic adjusting agent and a pH
regulator, the concentration of
compound A in the injection is 0.016-1.10 mg / ml, the pH of the injection is 7.4, and the injection is an isosmotic solution. Further disclosed is a method for preparing the above-mentioned injection preparation and a method for preparing the above-mentioned compatible medicinal liquid of the injection.