A pressure type multifunctional brush capable of allocating automatically is designed to solve the technical problems that the field allocation proportion of binding agent, coating and other various liquid materials is inaccurate, a building and other special positions are difficult to touch and coat, colloidal materials with poor mobility are difficult to allocate and coat, and the like of the prior art. The pressure type multifunctional brush mainly comprises a probe part, an allocation area part and a brake area part, a cavity is arranged in a probe baffle plate, small and dense holes are formed on the cavity wall which is contacted with the probe, and the probe part is communicated with the allocation area part through a hollow connecting rod; the allocation area part accurately mixessolvents in two containers through an allocator, and the mixed solvent is delivered to the probe part for coating by the brake control through the brake part. The cylindrical or conical probe is selected to be used according to the coated surface. The pressure type multifunctional brush capable of allocating automatically has the advantages of simple structure, easy production, practicality and low cost; the difficult problems that the proportion of the binding agent, the coating and other liquid materials is difficult to be accurately allocated on the construction field and the colloidal materials with the poor mobility are difficult to allocate and coat are solved, thereby realizing the coating of the building and other special places or the places which are difficult to touch.