continuous care group (CCG): This is the experimental group where continuous care supported would be offered by the nurse coordinated integrative health care team. which is, parents in this group receive support during infant hospitalization. The support covers both hospitalization phase and after-discharge phase. In-hospital support include educational support and promoting mother-infant attachment. Nurses will be responsible for home visits after infant discharge.

Routine Care Group (RCG): This is the comparison group of preterm infants. the routine care interventions generally include telephone reminding about follow-up care of the infants and hotline for parents to call when needed.

The Nurse-Led Continuous Support was provided by a integrative care team. In-hospital support included(1) Promoting early parental-infant interaction;(2) Instruct the mother and/or father to use sensory stimulation activities to promote infant neuro-development in the NICU;(3) Parental educational support. The integrative care team will teach infant care skills, prepare them for successful transition from hospital to home setting.

After infant discharge support will consist of regular home visits by the nurses. Home visits will be offered every other week until children reaching 3 Months of corrected age.

preterm infant will be assessed by the Ages and Stages Questionnaire (ASQ). The scale is used to help parent evaluate the development outcome of infants and young children by themselves.

Edinburgh postnatal depression scale (EPDS) will be used to assess psychological well-being of preterm mothers.