Sanlu infant formula quality problem, now has detected melamine with different contents which caused infants and young children's death and renal calculus, the highest is up to 2563mg / kg, the others are between 0.09-619mg / kg. In the press conference held by the State Council Information Office on September 17th, Minister of Health Chen Zhu said that as of 8:00 on the 17th, a total of 6244 clinical diagnosed cases were reported nationwide. Of these, 4917 had mild symptoms and were undergoing outpatient follow-up treatment or had been cured. Currently, 1327 children remained hospitalized for observation and treatment. Among all clinical diagnosis cases, 158 people experienced acute renal failure, accounting for 2.5% of the total number of cases, and currently 94 people have stable conditions or have been discharged after being cured. In addition, retrospective investigations found 3 deaths, two in Gansu province and one in Zhejiang province.