Gallstones 3mm may be discharged and can be treated with oral lithotripsy drugs such as oral ursodeoxycholic acid tablets. Gallstones 3mm is the diameter of the smaller stones, oral ursodeoxycholic acid tablets and other drugs, through the drug can play a role in dissolving the role of stone exclusion, can make the gallstones gradually decomposition, and then through the gallbladder duct and choledochal duct, choledochal duct lower jugular abdominal, and then reach the duodenum, and finally through the jejunoileum and the colon is gradually discharged from the body. During the treatment, you need to control your diet, avoiding oily and cholesterol-rich food, which is not conducive to the normal recovery of gallstones. If the effect of medication is not good, you can choose surgical treatment, such as gallbladder incision lithotripsy. To summarize, if you suffer from gallstones, you should consult a doctor in time and take medication as prescribed by the doctor.