First, the nature of reflection is different.

1，EQ

It mainly reflects a person's ability to feel, understand, use, express, control and adjust emotions, as well as his ability to deal with emotional relationships with others.

2. IQ

It mainly reflects people's cognitive ability, thinking ability, language ability, observation ability, calculation ability, rhythm ability and so on.

Second, the foundation of formation is different.

1，EQ

The relationship with social and environmental factors is far greater than genetic factors.

2. IQ

The relationship with genetic factors is far greater than social and environmental factors.

Third, the roles are different.

1，EQ

Its function is closely related to social life, interpersonal relationship, health status and marital status.

2. IQ

The main function is to understand things better. People with high IQ have excellent thinking quality, strong learning ability and profound understanding, and are easy to make outstanding achievements in a certain professional field and become experts in a certain field.

Baidu encyclopedia-IQ