The utility model discloses a digit storage oscilloscope sampling control system, it relates to digital storage oscilloscope and gathers technical field. It includes signal conditioning circuit, acquisition control circuit, trigger control circuit, the control system circuit, the time base control circuit, power module circuit and DSP, signal conditioning circuit passes through AD module and acquisition control circuit connection, the time base control circuit connect acquisition control circuit, AD module respectively, the control system circuit with trigger control circuit and be connected, trigger control circuit and meet signal conditioning circuit, acquisition control circuit, control system circuit all are connected with DSP, the power module circuit is connected with acquisition control circuit, control system circuit, DSP respectively. The utility model discloses with low costs, the performance is high, has improved the integrated level of system, has increased the flexibility and the reliability of design moreover.