PURPOSE: A manufacturing method of a floor material for animal birth is provided to easily form an even coating layer by using calcium carbonate to control viscosity of loess liquid in a coating process of loess liquid. CONSTITUTION: A manufacturing method of floor material for animal birth comprises the following steps: Loess liquid of 20 to 50 μm is formed on a side of a floor material paper board(S10). Functional coating is coated on the side of floor material paper board coated with the loess liquid(S20). The water content of the coating layer is controlled to be within 5% by passing the floor material paper board coated with a functional coating liquid through a dry box(S30). The thickness of the dried floor material paper board is formed to be 2 mm by compressing the same with a pair of compressing rollers. 0.5 mm of embossing is respectively formed on the top and bottom of a floor material paper board by introducing the compressed floor material paper board between a pair of embossing rollers(S50). [Reference numerals] (AA) Paper board lamination 2.5mm; (BB) 15-25 weight% of adhesive liquid; (CC) 20-40 weight% of chitosan; (DD) Loess liquid of 20-50um; (EE) 15-30 weight% of germanium; (FF) 10-20 weight% of tourmaline; (GG) 10-15 weight% of calcium chloride; (HH) 100-2000MHz; (II) Compressing to a thickness of 2.0mm; (JJ) Embossing height 0.5mm; (S10) Loess coating step; (S20) Functional coating step; (S25) Fixing step; (S30) Drying and sterilizing step; (S40) Compressing step; (S50) Embossing forming step;본 발명은 가축 분만 시 분만 중의 가축과 생후 초기의 가축에게 쾌적한 축사환경을 제공하여 건강한 발육상태를 가능하게 하는 가축분만용 바닥재의 제조방법에 관한 것으로서, 보루지합지로 조성되는 바닥재판지의 일면에 황토액을 20 내지 50 ㎛의 두께로 황토코팅층을 형성하는 황토코팅단계(S10);와, 황토액으로 코팅된 바닥재판지의 일면에 점착액 15 내지 25 중량%, 키토산 20 내지 40 중량%, 게르마늄 15 내지 30 중량%, 토르말린 10 내지 20 중량% 및 염화칼슘 10 내지 15 중량%로 조성되는 기능성코팅조성물 100 중량부에 정제수 100 중량부를 혼합한 기능성코팅액을 도포하는 기능성코팅단계(S20);와, 기능성코팅액으로 코팅된 바닥재판지를 150 ℃의 열기와 원적외선이 동시에 발산되는 건조박스에 통과시켜 코팅층의 수분함유율을 5 % 이내로 조절하는 건조살균단계(S30);와, 건조된 바닥재판지를 수