This systematic review aims to verify whether tools designed to assess Ayres Sensory Integration constructs take into account the basic principles of current early childhood intervention approaches, namely the family-centered approach, child and family routines, and natural contexts. This systematic review was based on a standard protocol constructed according to the Preferred Reporting Items for Systematic Reviews (PRISMA) statement and included 323 publications. From these publications, we identified seven sensory integration assessment instruments for children up to 6 years old which are compatible with recommended early intervention practice. This study identified the instruments for sensory integration assessment in young children and related them with current principles of early childhood approaches. The findings may help researchers and clinicians choose instruments.