Children’s intelligence measurement is divided into screening scales and diagnostic scales. The details are as follows:

1. Screening scales: 1. Denver Intellectual Development Screening Scale: and Called DDST, it determines the possibility of mental retardation by testing the child's ability to respond to people, objects, gross and fine motor and language abilities. 2. Age simulation method: Let the child draw according to the graphics to see how old he can draw the graphics to screen for mental retardation. 3. People drawing test: Let children draw people, which can show the approximate IQ equivalent to the age level;

2. Diagnostic scale: 1. Geisel Development Scale: By testing the child's application The IQ level is tested in several aspects such as human ability, object ability, language ability and motor ability. If it is <75, it is considered to be mental retardation. 2. Wechsler Intelligence Scale: Suitable for children and adults aged 4-16 to measure. It tests intelligence levels through various aspects, such as calculation ability, understanding ability, form filling, drawing, common sense, language, etc.