If I use M1 and M15 charts for my trading,
On M15 chart, market is just going uptrend, but on M1 chart, market is going down.
When next M15 candle open, I have to make Buy entry at once?
or I have to wait until market is going up on M1 chart?
That's a good question WWMMACAU, usually when 15 min. charts are in bullish mode, you can optimize your entry by looking for bullish signals also in the 1 min. charts. To sum up: if a higher timeframe trend is bullish, then you will look to follow the trend in lower timeframes too.
You need to have a confluence of the 2 time frames to get a better entry.
For me, I use the M5 and M15. Whenever the M15 is going bullish, I will wait until the M5 turns bullish before entering a trade. This can give you a higher probability of winning.
Always Plan Your Trade & Trade Your Plan
Ya FxWizard & kelvindee are right and for this I have a best addon for your Metatrader to use. Its called knight array. It will show you how the market is bullish or bearish in all time frames and also show you range and momentum. Just give it a try....
My suggestion would be to trade longer time frames. My trading took the quantum leap when I got off the short time frames and went to longer time frames. No longer was I looking for 5 or 10 pips but rather hundreds.