背景 產後憂鬱為產後婦女常見健康問題，運用有效的社會支持降低產後憂鬱為重要議題，現今智慧型手機的普及，使介入處置的方式有更多可能性。

目的 本研究旨在探討以Line為媒介的行動應用程式之社會支持方案，對產後婦女改善知覺壓力與憂鬱之效果。

方法 本研究採實驗性研究設計，126位懷孕36週後且有使用智慧型手機習慣者，隨機分配為實驗組（n = 61）與對照組（n = 65），實驗組於產後4週以Line提供每週2次的社會支持方案，對照組則無介入方 案，並以中文版知覺壓力量表和愛丁堡憂鬱量表評值成效。

結果 實驗組產後婦女的知覺壓力（F = 27.25, p < .001）與憂鬱程度（F = 35.73, p < .001）都顯著低於對照組。

結論 以Line為媒介的行動應用程式之社會支持方案可有效降低產後婦女知覺壓力與憂鬱程度，依研究結果，行動應用程式之社會支持方案建議可被應用於產後照護。

Background: Postpartum depression is a common health problem for women following childbirth. Using effective social support to reduce postpartum depression has become an important issue. The current popularity of smartphones offers new possibilities for interventional methods.

Purpose: To investigate the effects of mobile-application-based social support programs on perceived stress and postpartum depression in postpartum women .

Methods: The present study employs an experimental research design. 126 smartphone users at 36 weeks’ gestation were assigned randomly to the intervention (n = 61) or the control (n = 65) group. The intervention group received a social-support intervention via the mobile application Line twice per week for a period of 4 weeks after childbirth. The control group did not receive the intervention. The Perceived Stress Scale—Chinese version and Edinburg Postnatal Depression Scale were used to evaluate the outcome.

Results: Participants in the intervention group had significantly lower perceived stress (F = 27.25, p < .001) and postpartum depression (F = 35.73, p < .001) than their control group peers.

Conclusion: Social-support programs that are delivered via mobile applications such as Line may significantly reduce the perceived stress and postpartum depression of women during the early postpartum period. The results support the implementation of mobile-application-based social support programs in postpartum care.