Results :
The study of the cause of youth smoking and alcohol in the village Aged 15-20 years at Samrongnoi village, Tombon nonghang, Utumpornpisai district, sisaket province 33120 concluded as follows.
1. Causes of family are as follows.
1.1 they parents parted Number 4 peoples Representing 10%
1.2 The bad example of their parents Number 2 peoples Representing 5%
1.3 Lack of attention from parents. Number 7 peoples Representing 17.5%
1.4 Youth lack of dependence .Number 6 peoples Representing 15%