Hi @shaokis
It looks like the type of ceiling light shade that is held on by spring clips on the inside of the light shade.
Use a step ladder so that you can get up and reach the ceiling safely and then check if you can grip both sides of the shade and gently pull the shade straight down off the actual light fitting which is affixed to the ceiling.
''Be safety aware'' and ensure that the light switch on the wall is switched off or to be doubly sure, remove the light power fuse (or trip the light breaker) in the house power box