No problem! But I really want to know what's wrong with my wallet import. and is there any guide to do that.
Did you try to dump private keys from your qt wallet?
The command you're looking for is wallet_import_bitcoin.
wallet_import_bitcoin /home/user/.bitcoin/wallet.dat "Everyone loves Fishes!" xman
wallet_import_bitcoin <wallet_filename> <passphrase> <account_name>
Imports a Bitcoin Core or BitShares PTS wallet
Parameters:
wallet_filename (filename, required): the Bitcoin/PTS wallet file path
passphrase (passphrase, required): the imported wallet's password
account_name (account_name, required): the account to receive the contents of the wallet