Is a hyperthyroidism person can have kids?

Yes: Although it is probably best to get the hyperthyroidism treated first. Different treatment options can affect the timing of pregnancy. With surgery, once the thyroid labs are normal, it would be safe. With radioactive iodine, standard advice is to wait 6-12 months. With thyroid blocking tablets, it is best to wait 1 year after finishing the course of treatment (total 1-2.5 years).