user64279: my transaction is here: https://blockchain.info/tr/tx/cb371b331e99eccb2d7447f4fe02417812ad066de21843fa156d4890e2cdf329
The reciever is a exchange wallet I don't know the reciever's private key.
it got stuck for hours and I need them immediately. I used electrum wallet for the first time and I have forgetten tick "replaceable". So now I can't change fee.
Once, I used "child pays for parent" property but now I couldn't see on electrum wallet. How can I unstuck it? or How can I use " Child Pays for Parent" feature ? I really searched for hours but I couldn't use it. 
note: and I open for other answers.. for example how to stop braoadcasting transaction? is it possible?
This is the weakest side of bitcoin, I think :(

user38618: You can't use CPFP to confirm that transaction. It's impossible for one to rescue a low fee transaction using CPFP, unless he/she has a private key of at least one ddress of that transaction's outputs (in your case, it's impossible, because you don't).
That transaction's receiver can do CPFP, if he/she wants.
Hint: Use RBF (https://freedomnode.com/blog/75/how-to-fix-slow-bitcoin-transactions-with-replace-by-fee) or pay $4 on confirmtx.com

64279: <p>my transaction is here: <a href="https://blockchain.info/tr/tx/cb371b331e99eccb2d7447f4fe02417812ad066de21843fa156d4890e2cdf329" rel="nofollow noreferrer">https://blockchain.info/tr/tx/cb371b331e99eccb2d7447f4fe02417812ad066de21843fa156d4890e2cdf329</a><br>
The reciever is a exchange wallet I don't know the reciever's private key.
it got stuck for hours and I need them immediately. I used electrum wallet for the first time and I have forgetten tick "replaceable". So now I can't change fee.
Once, I used "child pays for parent" property but now I couldn't see on electrum wallet. How can I unstuck it? or How can I use " Child Pays for Parent" feature ? I really searched for hours but I couldn't use it. </p>

<p>note: and I open for other answers.. for example how to stop braoadcasting transaction? is it possible?
This is the weakest side of bitcoin, I think :(</p>
 38618: <p>You can't use CPFP to confirm <em>that</em> transaction. It's impossible for one to rescue a low fee transaction using CPFP, <strong>unless</strong> he/she has a private key of at least one ddress of that transaction's outputs (in your case, it's impossible, because you don't).</p>

<p>That transaction's receiver can do CPFP, if he/she wants.</p>

<p>Hint: Use RBF (<a href="https://freedomnode.com/blog/75/how-to-fix-slow-bitcoin-transactions-with-replace-by-fee" rel="nofollow noreferrer">https://freedomnode.com/blog/75/how-to-fix-slow-bitcoin-transactions-with-replace-by-fee</a>) or pay $4 on confirmtx.com</p>
