A method of manufacturing an amorphous alloy magnetic core, the method comprising: a layered body preparing step of preparing a layered body by layering amorphous alloy thin strips one on another, the layered body having one end face and another end face in a width direction of the amorphous alloy thin strips and an inner peripheral surface and an outer peripheral surface orthogonal to a layering direction of the amorphous alloy thin strips; a hole forming step of forming a hole passing through from the one end face of the layered body as a starting point, the width direction corresponding to a depth direction of the hole; a heat treatment step of subjecting the layered body, after being subjected to the hole forming step, to a heat treatment while measuring an internal temperature of the hole; and a resin layer forming step of forming a resin layer which blocks the hole and covers at least a part of the one end face by coating and curing a two-liquid mixed type epoxy resin composition having a viscosity at 25°C after mixing of two liquids measured under a condition of a rotation speed of 50 rpm of from 38 Pa·s to 51 Pa·s and a thixotropy index value at 25°C after mixing of the two liquids determined by the following Formula of from 1.6 to 2.7 on a region which is at least a part of at least the one end face of the layered body after being subjected to the heat treatment step and includes the hole: Thixotropy index value at 25 ° C after mixing of two liquids = viscosity at 5 rmp / viscosity at 50 rpm wherein, in Formula, the term "viscosity at 50 rpm" refers to the viscosity at 25°C after mixing of the two liquids of the two-liquid mixed type epoxy resin composition measured under the condition of a rotation speed of 50 rpm and the term "viscosity at 5 rpm" refers to the viscosity at 25°C after mixing of the two liquids of the two-liquid mixed type epoxy resin composition measured under the condition of a rotation speed of 5 rpm. a layered body preparing step of preparing a layered body by layering amorphous alloy thin strips one on another, the layered body having one end face and another end face in a width direction of the amorphous alloy thin strips and an inner peripheral surface and an outer peripheral surface orthogonal to a layering direction of the amorphous alloy thin strips; a hole forming step of forming a hole passing through from the one end face of the layered body as a starting point, the width direction corresponding to a depth direction of the hole; a heat treatment step of subjecting the layered body, after being subjected to the hole forming step, to a heat treatment while measuring an internal temperature of the hole; and a resin layer forming step of forming a resin layer which blocks the hole and covers at least a part of the one end face by coating and curing a two-liquid mixed type epoxy resin composition having a viscosity at 25°C after mixing of two liquids measured under a condition of a rotation speed of 50 rpm of from 38 Pa·s to 51 Pa·s and a thixotropy index value at 25°C after mixing of the two liquids determined by the following Formula of from 1.6 to 2.7 on a region which is at least a part of at least the one end face of the layered body after being subjected to the heat treatment step and includes the hole: Thixotropy index value at 25 ° C after mixing of two liquids = viscosity at 5 rmp / viscosity at 50 rpm wherein, in Formula, the term "viscosity at 50 rpm" refers to the viscosity at 25°C after mixing of the two liquids of the two-liquid mixed type epoxy resin composition measured under the condition of a rotation speed of 50 rpm and the term "viscosity at 5 rpm" refers to the viscosity at 25°C after mixing of the two liquids of the two-liquid mixed type epoxy resin composition measured under the condition of a rotation speed of 5 rpm.