Provided is a toner for electrostatic charge image developing, comprising a core layer which contains a first binder resin and a coloring agent, and a shell layer which contains a second binder resin and covers the core layer, characterized in that the following equation (1) and the following equation (2) are satisfied, 2.0.times.10.sup.5.ltoreq.G'(60).ltoreq.4.0.times.10.sup.6 Equation (1) 10.ltoreq.G'(60)/G'(80).ltoreq.40 Equation (2) wherein, in the equation (1) and the equation (2), G'(60) represents a storage elastic modulus (Pa) of the toner for electrostatic charge image developing measured under the conditions of a temperature of 60.degree. C., a vibration frequency of 6.28 rad/sec, and a strain amount of 0.01 to 0.5%, and G'(80) represents a storage elastic modulus (Pa) of the toner for electrostatic charge image developing measured under the conditions of a temperature of 80.degree. C., a vibration frequency of 6.28 rad/sec, and a strain amount of 0.01 to 0.5%.Also provided is a developer for electrostatic charge image developing comprising the toner and a carrier, and an image forming apparatus using the toner.