Index study for technical analysis of stock price trends to support the decisions in invest of short-term stocks. Data analysis using the fundamental and technical factors.Create graphs to analysized the trend.This is a tool for decision making.Consider by MACD-Moving Average Converge-Diverge, RSI-Relative Strength Index and Moving Average (EMA- Exponential Moving Average, SMA-Simple Moving Average, WMA- Weighted Moving Average) Moving average is defined in a different time period. The principle Dow theory strengths and weaknesses of each technique to the study. Applied to real data of each day from the stock exchange of Thailand.