Considering the existing shortcomings of the television conference system and the current needs of weather forecast consultation at the provincial level, by means of the matrix theory and central control system, an appropriate model, which fits the current needs very well, is developed. Through programming the control instructions for the CRESTRON central control system, the computer control of the multipoint dual video mode at same site is realized. The explanations of the program codes are given. The verification of the multipoint dual video mode in the provincial video conference consultations indicates that the system is simple and stable, and was applied in the 11th Chinese National Games successfully.