The follicle 26*23*22 is 26mm*23mm*22mm, the follicle is relatively large, the role of playing ovulation is not very useful, it is not recommended to play ovulation. Normal mature follicle size of 18 ~ 25mm, normal ovulation after the chances of conception than larger, and follicle 26mm * 23mm * 22mm, relatively large, generally can not be naturally discharged, may shrink, or the formation of corpus luteum cysts. The quality of follicles after ovulation is relatively poor, and most of them will not be conceived. Therefore, follicles of 26mm*23mm*22mm are not recommended for ovulation. For women who usually do not ovulate, it is recommended that the follicle develops to 18mm, the quality of the follicle is better, and its ability to conceive is better.