The utility model relates to an agitating and conveying device of mortar for interior decoration. According to the scheme, the agitating and conveying device comprises an agitating tank with an opening at the upper part, wherein the agitating tank is internally provided with an agitating shaft; the lower end of the agitating shaft is connected with an agitating motor arranged below the agitating tank; the agitating shaft is provided with a plurality of agitating blades; a water inlet is formed in the side wall of the agitating tank above the agitating shaft; a sieving shell is connected above the agitating tank through a plurality of springs; an obliquely-arranged strip-shaped filter screen is arranged in the sieving shell; a dreg outlet is formed in the sieving shell at one downwards-inclined end of the strip-shaped filter screen; a material pushing comb is arranged on the strip-shaped filter screen; a plurality of comb teeth which are arranged in the gap of the strip-shaped filter screen in a staggered way are arranged at the lower part of the material pushing comb; the material pushing comb is driven by a linear action power device; a transverse supporting plate is connected with the outer side wall of the sieving shell; a vibration motor is arranged on the supporting plate; and the bottom end of the agitating tank is connected with a mortar pump via a discharging hole. According to the agitating and conveying device of the mortar for the interior decoration, the mortar can be filtered very well and the filter screen can be carded so as to prevent the filter screen from being blocked, and the mortar is fine and uniform.