研究目的：本研究基於健康促進和基於「預防勝於治療」觀點，以國中生為對象，進行以「笑」的介入方案，期能作為推動正向心理健康活動的參考。研究方法：本研究採非等組前、後測設計，選樣自台北縣某國中的76名學生作為受試者。研究工具以自填式的自尊、幽默感、身體健康、壓力適應及對於笑的態度等量表收集資料，亦使用情緒臉譜量表測量現在情緒狀態。統計方法以SPSS 15.0進行之。研究結果：統計分析顯示笑笑功的介入效益能使研究對象提升幽默感(F(下標 (1,41))=5.62, p<.05)、減少身體不適情形(F(下標 (1,4))=9.14, p<.01)、對於笑擁有正面的態度(F(下標 (1,51))=12.41, p<.05)；雖然在自尊(p=.86)及壓力適應(p=.77)的變項並無統計顯著差異，但由情緒臉譜量表可以得知參與國中生對於笑的介入方案都抱持正面且支持的態度。另外，在追蹤研究上，實驗組得分最高的項目是「生活中最大的改變，是會面帶笑容與別人交談」。此外，有90.7%的追蹤樣本覺得「笑笑功」能促進自己用正向及積極的態度來面對未來。研究結論：笑的介入對於青少年生理和心理健康具有正面效益，本研究對正向心理治療具有重要的應用性。建議未來研究，能設計以生理實證醫學為基礎的設計，以驗證笑笑功進一步的成效。

Purpose: This study was based on the perspective that promoting health and preventative measures is better than curing disease. The purpose was to evaluate the effectiveness of the Laughing Qigong Program (LQP) among junior high school students in Taiwan. Methods: We used a nonequivalent pre-test post-test design, and selected participants (N=76, age range: 12-14) from a junior high school in Taipei County. The instruments used to collect data included self-report scales of self-esteem, sense of humor, physical condition, the feeling of pressure, and attitudes toward laughter. Also we used the Face Scale to measure current mood status. Statistical analysis was performed with SPSS 15.0. Results: Results supported the effectiveness of the LQP for all participants. The activity resulted in an increased sense of humor (F(subscript (1,41))=5.62, p<.05), decreased physical discomfort (F(subscript (1,4))=9.14, p<.01), and produced more positive attitudes toward laughter (F(subscript (1,51))=12.41, p<.05). Although no statistical significance was found in the variables of self-esteem (p=.86) or stress coping (p=.77), the participants had a positive attitude toward and supported the laughter intervention according to the score of measuring by the faces scale. Furthermore, in the follow-up study, the participants in the experimental group reported the highest item scores in "most life change" and "Ⅰ will talk with other people with a smiling face." Over 90% of the participants in the follow-up group felt that the LQP promoted a positive attitude toward the future. Conclusions: Laughter intervention has positive effects on the physical and mental health status of young adolescents. These findings have important implications for positive psychotherapy. We suggest that future studies be designed for biomedical evidence-based validation of the effectiveness of LQP intervention.