The formation of magnesium ammonium phosphate hexahydrate stones is associated with urinary tract infections, caused by urease-producing bacteria in the urinary tract. Magnesium ammonium phosphate hexahydrate stones are also known as infection stones. There are more than 30 species of pathogenic bacteria that cause this stone, 80% are caused by Aspergillus spp. Other pathogenic bacteria are Staphylococcus aureus, Pseudomonas aeruginosa and Mycoplasma solani. The urease enzyme produced by these bacteria can catalyze the decomposition of urea into ammonia and carbon dioxide, and ammonia is then combined with water to form ammonium hydroxide. When the urine pH reaches 7.2, ionized ammonium can combine with magnesium and phosphate in the urine to form magnesium ammonium phosphate. When the ammonium magnesium phosphate in the urine reaches a supersaturated level, crystals are precipitated. Stones are formed. When such stones occur, it is recommended to seek medical attention in a timely manner, and the doctor will give reasonable treatment recommendations based on the individual’s physical condition, as well as the size and location of the stones.