Tubal fluid can usually be seen by ultrasound. Ultrasound is a method of diagnosing diseases by using the physical properties of ultrasound and the differences in the acoustic properties of human organs and tissues. It is often used to determine the location, size and shape of the organs, and to determine the extent and physical nature of the lesions. If there is fluid in the fallopian tube, ultrasound examination will show abnormal echoes, such as the double adnexa area can be seen tortuous tubular dark area. The ultrasound doctor can clarify whether there is hydrosalpinx based on the echoes in the double adnexal area. If the ultrasound suggests the presence of hydrosalpinx, further examination, such as pelvic CT or MRI, will be needed to clarify the amount of tubal hydrosalpinx and to find out the cause of tubal hydrosalpinx. To summarize, tubal hydrosalpinx can generally be seen by ultrasound, if there is tubal hydrosalpinx, it is necessary to go to the hospital in time to receive a systematic examination, to clarify the cause of the disease, and then comply with the doctor’s instructions to deal with the treatment.