Patients with IgA nephropathy can engage in sexual intercourse, but there are certain prerequisites. Firstly, this disease is not contagious, and it will not be transmitted to the partner during intercourse. Secondly, there is not a significant relationship between renal function and sexual capability; patients with kidney diseases typically retain normal sexual and reproductive functions. However, since sexual activity requires a certain amount of physical strength, and in cases where the patient's condition is particularly severe, it might render the patient unable to engage in sexual activities. Therefore, if the patient does not have significant hypertension, severe edema, especially genital edema, pulmonary edema, or heart failure, they would be capable of engaging in sexual activities, and thus can have intercourse.