Why did edward want to kill renesmee?

Edward wanted to kill her at first because she was killing Bella and Edward was worried. I think that's why he wants to kill her (I haven't read the book but I know some info).

Hope that helped!!

well i have read the book and the reason Edward wanted to kill renesmee aka Nessie was because she was weakening Bella everyday and could kill her. she nearly did! But when Edward read Nessie's mind when she was inside Bella he learned that she didnt want to hurt Bella and was trying hard not to hurt her. its just that she was strong and growing fast but Bella wasnt growing fast enough for Renesmee.