Redstone dust is connected,but the lower dust haven't powered

Because you using glass, glass do not transmit energy.

But the two redstone dust connected, redstone dust can transmit energy.

Redstone dust on top of glass or top slabs can not send a signal downwards even though it connects. It can however send a signal up. This is intended and not a bug.

Duplicate of https://bugs.mojang.com/browse/MC-3311
I know this works as intended, I just don't know why it's intended with glass (as the wire connects).
I see "Glass doesn't transmit energy" but I feel like that's logic is wrong. If the two dusts are connected then they should be able to transmit power to one another no matter what they're placed on.

Sorry, you right.