i have a problem in my microsd card
SO PLZ HELP ME WHAT CAN I DO THIS CARD

What exactly is the problem? Are you trying to mount it on a Linux system? If so, tell us what distro and what version of said distro.
Are you inserting it in a card reader? Is the micro SD card in a camera, a cell phone, or something else??
You need to tell us what you are trying to do with the card; and what exactly the problem is.
You have given us very little information, so it is very difficult to offer specific advice to help you.

After you connect the micro SD card to the computer, post the output of these two terminal commands:
This will tell us all usb devices connected to the computer that it recognizes. Also post the output of:
You may need to be root or use sudo to run that command depending on what distro you are using.
The dmesg command will tell us if the kernel is able to find the device after it has been connected. This can be useful if the lsusb command does not list the card.

Please give us as much info as you can so we can help you.
And welcome to the LQ forums!

Thank you for your help.