In the long football schedule, unless you change coaches at the beginning of the season, the three goals are not a good choice. A coach has the tactical system and training system that the coach thinks, and a Protestant trainer must accept new tactical techniques and training methods. It is very obvious in women's football that it takes more time to adapt to the coach's style to change foreign coaches, so it is impossible to achieve too good results at this stage. At this time, I often feel that it is the coach's problem and need to change a coach.