I created a wallet in myscellium wallet . There was a HD wallet and then I made export the private key .
Now when I made a single transaction the address of wallet changed .
Now my question is , can I still receive bitcoin at the old address every time .
please help only those person who knows this exactly .
It's hard to understand what you're asking, but if i understand correctly, you just created an HD wallet, created a first address, received BTC and now you ask if you can re-use this address, since you now see a second receiving address and no longer the first one?
The answer is: yes
An HD wallet manages all addresses in the wallet, both used and unused