The invention discloses a method for consulting device processing ability in remote management, which comprises that a, sender informs the ability for processing simple object access protocol SOAP message supported by self, to a receiver, b, the receivers receives the inform and informs the ability for supported SOAP message to the sender. The invention can overcome the defects of prior art, which uses ACS and CPE to consult the supported SOAP processing abilities when sending request or responding message, therefore, sender can send data pack in right size according to the consulted processing ability, to avoid the problems caused by over processing ability, to reduce unnecessary data pack transmission, realize devide differential, and reduce processing ability waste.