What is the best possible route from jinzhou to Beijing daxing airport?

Do you mean the Jinzhou in Liaoning province?

I will be coming through train from jinzhou liaoning province to beijing.but I couldnt find the correct railway station (beijing railway station or south station or the west) which will be easier for me to get to the airport.
And i need to know whether airport shuttle bus station will be easier to find in that railway station

Take train from Jinzhou Railway Station, or high speed train from Jinzhou South Railway Station to Beijing Railway Station. Then you can take direct shuttle bus from Xintong Building stop, 500m away from train station to Daxing airport.