The utility model provides a gas -solid disconnect -type sand -protecting barrier comprises set up side by side two rows combination sand -protecting barriers, has the space between these the two rows combination sand -protecting barriers, and every row is made up the sand -protecting barrier and comprises the monomer sand -protecting barrier of a plurality of V -arrangements that set up side by side, and same row makes up has the interval in the sand -protecting barrier between two adjacent monomer sand -protecting barriers, the crisscross setting in interval between two adjacent monomer sand -protecting barriers in the combination sand -protecting barrier is arranged with another in the interval between two adjacent monomer sand -protecting barriers in the sand -protecting barrier to the one row of combination, and the opening direction of monomer sand -protecting barrier is arranged with another and is made up that the opening direction of monomer sand -protecting barrier sets up in opposite directions in sand -protecting barrier in the one row of combination sand -protecting barrier. This disconnect -type sand -protecting barrier easily separates the grains of sand and air current in the stream as a neotype sand -protecting barrier, and the sand prevention is efficient, and the installation rate is fast, and the construction is simple and convenient, low price, sexual valence relative altitude.