config :
ver 2.9.6

/ ip firewall filter
add chain=input connection-state=invalid action=drop
add chain=input connection-state=established action=accept
add chain=input protocol=udp action=accept
add chain=input protocol=icmp action=accept
add chain=input src-address=192.168.0.0/16 action=accept
add chain=input action=drop

/ip firewall filter
add chain=forward protocol=tcp connection-state=invalid action=drop
add chain=forward p2p=all-p2p action=drop
add chain=forward p2p=bit-torrent action=drop
add chain=forward connection-state=established action=accept
add chain=forward connection-state=related action=accept

+NAT for 192.168.0.0/16

but Bit-Torrent traffic still forwarding through MT , despite of firewall rules !!!
what's is the problem ? ? ?

anyone ?

did you disable/enable the interface it's on? it won't be effective if you add the rules when the connections are already established. also try to make a queue that limits the speed to some 20bps, also very effective.