Sample pretreatment is the critical section in residue determination, it's the key indicator to measure the advancement and practicability of a new determination method.

Objective to characterize the components of "antibiotic destroyer" in raw milk and examine its residue determination in raw milk samples collected from the retail stores in Beijing.

The method was rapid and practical analysis detection method that was in line with request of pesticide residue determination. It is suggested that the method be popularized and applied to practice.