In order to accurately measure the characteristics of attosecond pulses, we have independently developed a set of attosecond streaking camera with high energy resolution. The device adopts an electronic time-of-flight spectrometer with a magnetic bottle structure and an electronic flight distance of up to 2 m. Based on the above design, the spectrometer has high energy resolution and collection efficiency. The stability accuracy of delayed scanning of NIR femtosecond pulses and XUV attosecond pulses is smaller than 20 as (root-mean-square) in optical system of the device. A double optical gating technology was used to shape the optical electric field of the femtosecond pulses, and an isolated attosecond pulse was generated in the Ne gas cell. The attosecond streaking spectrogram was obtained by the attosecond streaking camera. An isolated 159-as attosecond pulse was achieved through phase retrieval by omega oscillation filtering (PROOF).