Why our moon don't have volcano?

Since Aristarchus has been having active venting for hundreds of years, THAT is a still active lunar volcano. Just because there is no lava coming out of it does NOT mean it is not active. 

https://www.forbes.com/sites/brucedorminey/2013/03...

For the people who say the Moon doesn't have?any magma left, yes, the Moon DOES STILL have a 30 km thick LIQUID layer surrounding a solid core. The Moon has plenty of moonquakes. The Moon is far from geologically dead. That is?why outgassing can and is still occurring. 

The moon had ancient volcanoes that even erupted. Those dark spots you see on the moon aren’t craters. They are large flat lands of volcanic rocks. They’re known as lunar Maria.

Our moon don't have magma activity spurt out of rock. 

You mean "Why doesn't our moon have a volcano?". There is no magma at the core of our moon, and therefore no volcanic activity.

It's not likely that there is any magma still left in such a small rock. Other moons flex under the influence of their planet, which can generate heat, but with our moon virtually always facing the same way all the time, there won't be as much flexing going on.

Ahh, the Moon has had volcanic events, big ones too.

http://volcano.oregonstate.edu/oldroot/volcanoes/p...

https://svs.gsfc.nasa.gov/11692

https://space.stackexchange.com/questions/10635/is...

http://www.pas.rochester.edu/~blackman/ast104/moon...

https://astronomynow.com/2016/10/29/lunar-impact-h...

The crust is much thicker than ours and there are no continental plates.