(For example: height 160cm, weight 50kg) 1. body surface area (m2) = height (cm) + weight (kg) – 60, the resulting value divided by 100 is the body surface area. (1.5 m2) 2. Body surface area (m2) = height (cm) × weight (kg) divided by 3600, and the square root of the value obtained is the body surface area. (1.49 m2) 3. The formula introduced in most domestic textbooks is: Body surface area (m2) = 1.05 + [weight (kg) – 30] × 0.02 (weight > 30kg). (1.45m2) Body surface area (m2) = 0.035 body weight (kg) + 0.1 (body weight ≤ 30kg). 4. General application of Stevenson’s formula: Body surface area (m2) = 0.0061 × height (cm) + 0.0128 × weight (kg) – 0.1529. (1.46m2) 5. Body surface area (m2) = 0.0061 × height (cm) + 0.0124 × weight (kg) – 0.0099. (1.586m2 ) (The formula for calculating the body surface area for men and women are: male body surface area (m2) = 0.0057 × height (cm) + 0.0121 × weight (kg) + 0.0882; female body surface area (m2) = 0.0073 × height (cm) + 0.0127 × weight (kg) – 0.2106, if there is no distinction between men and women, the general formula applied for Chinese people is body surface area ( m2)=0.0061×height(cm)+0.0124×weight(kg)-0.0099) 6. body surface area(m2)=(4×weight+7)/(weight+90). (1.478m2) 7. Body surface area (m2) = 0.0071 × height + 0.0133 × weight – 0.1971.(1.60m2) From the actual calculation of the value, I think that the formula of 1.2.3.4, convenient and reliable.