The height and weight standards for boys at different times are as follows: 1. for newborn babies, height between 46-53cm is normal and weight between 2.5-4.5kg is normal; 2. at 3 months of age, height between 57-65cm is normal and weight between 5-7.2kg is normal; 3. at 6 months of age, height between 63-72cm is normal and weight between 6.4-9.8kg is normal; 4. at 1 year of age, height between 71-80cm is normal and weight between 7.7-12kg is normal; 5. at 2 years of age, height between 71-80cm is normal and weight between 7.7-12kg is normal; 6. The weight between 6.4-9.8kg is normal; 4. At 1 year old, the height between 71-80cm is normal and the weight between 7.7-12kg is normal; 5. At 2 years old, the height between 81-94cm is normal and the weight between 9.7-15.3kg is normal.