Using the data of 218 cities during 2003 and 2012, we analyze how the development of high-speed railway (HSR) affects agglomeration of producer services. The results show that economic contacts are strengthened by the operation of HSR, and facilitate the agglomeration of producer services by 3% to 6%. Furthermore, the earlier the HSR run, the bigger it affects producer services agglomeration. Especially to cities along HSR,their producer services are significantly agglomerated through reinforcing the connection with each other, owing to HSR. Therefore, cities along HSR should take advantage of it to accelerate development of producer services, particularly for those important stations of HSR. On the contrary, the other cities may not suit for this industry.