The present invention discloses an assembled pet house, which comprises a bottom member, a front member, a rear member, a first side member, a second side member, and a roof member, A second side member and a roof member are assembled and separated from each other. The pet house includes a front member insertion groove 11, a rear member insertion groove 12, a first side member fitting groove 13 A bottom member 10 having a second side member fitting groove 14 A first fitting protrusion 21 fitted to the front member fitting groove 11 is provided at a lower end and a first fitting portion 22 and a second fitting portion 23 opened to both sides of the front fitting groove 11 are opened, A front member (20) having first roof fitting projections (24) A second fitting protrusion 31 fitted to the rear member fitting groove 12 is provided at the lower end and a third fitting portion 32 and a fourth fitting portion 33 opened to both sides of the upper fitting groove 32 are provided. A rear member (30) each having a second roof fitting projection (34) A fifth fitting portion 42 provided at the lower end of the third fitting protrusion 41 to be fitted in the first side member fitting groove 13 and fitted in the first fitting portion 22 of the front member 20, A sixth fitting part 43 fitted to the third fitting part 32 of the rear member 30 is provided on both sides and the fifth fitting part 42 is fitted to the first fitting part 22 And the sixth fitting portion 43 has a first side member 40 that opens downward to correspond to the third fitting portion 32 opened to the upper side A seventh fitting portion 52 having a fourth fitting protrusion 51 fitted to the second side member fitting groove 14 and fitted to the second fitting portion 23 of the front member 20, An eighth fitting portion 53 fitted to the fourth fitting portion 33 of the rear member 30 is provided on both sides and a seventh fitting portion 52 is provided on the second fitting portion 23 , And the eighth fittin
