Horizontal drilling technology is an important way to realize the development of tight oil. The pilot tests of horizontal well group were carried out in Qijia and another two tight oil blocks since 2013. The construction in Qijia was the most difficult, where there were characteristics of long horizontal section and large horizontal displacement with technical difficulties of poor formation drillability, 3D adjusting azimuth, low ROP and long drilling cycle. Based on the analysis on geological characteristics, by optimizing casing program, controlling well trajectory, optimizing 3D well trajectory, making technological breakthrough in personalized bit, friction & torsion reducing methods and matching tools, and according to the field application effects, a set of ROP improving technology for tight oil horizontal well in Qijia block of Daching oilfield has been developed with good results, the foundation has been laid for the further ROP improvement and large-scale application of ROP improving technology for tight oil long horizontal well in Daqing oilfield.