The invention discloses a strain for degrading a pendimethalin pesticide and a fungicide and an application of the strain. The strain is Providencia rettgeri JZB42C003 which is preserved at CGMCC on 17th, November, 2014, wherein the preservation number is CGMCC No. 9977. The JZB42C003 strain is good in degrading effect on pendimethalin or beta-cypermethrin left in soil, fruits, vegetables or water bodies, and the degradation rate on 50mg/L pendimethalin in a basic inorganic salt culture solution treated by the JZB42C003 strain in 5 days can reach 68.5%, and the degradation rate on 50mg/L beta-cypermethrin in the basic inorganic salt culture solution treated by the JZB42C003 strain in 5 days can reach 55.7%.