The invention discloses a method and a device for intelligent detection on a personnel safety helmet. The method comprises steps that a personnel sample picture of the personnel included in a first preset quantity is acquired, and a safety helmet sample picture of the personnel with a safety helmet included in a second preset quantity is acquired; DPM training of the personnel sample picture is carried out to generate a personnel distinguishing device, picture characteristics of the safety helmet sample picture are extracted, and Adaboost training of the picture characteristics is carried out to generate a safety helmet distinguishing device; a to-be-detected picture in a preset scope is acquired in real time, whether the to-be-detected picture has the personnel is determined through utilizing the personnel distinguishing device, if yes, whether the personnel in the to-be-detected picture wears the safety helmet is determined through utilizing the safety helmet distinguishing device, and determination results are outputted. Through the method, whether the personnel wears the safety helmet is detected in real time, hidden safety trouble caused by no safety helmets worn by the personnel can be avoided, and a problem existing in the prior art is solved.