A valve opening and closing timing control apparatus comprising: a drive-side rotational member rotating synchronously with a crankshaft of an internal combustion engine; a driven-side rotational member fixed to a camshaft for opening and closing a valve to integrally rotate with the camshaft; an advanced angle chamber (Ca) and a retarded angle chamber (Cb) defined by the drive-side rotational member and the driven-side rotational member; a mounting member including a tubular wall portion and being coaxial with the camshaft, the mounting member mounting the driven-side rotational member to the camshaft; and a spool housed within a void which is defined by the tubular wall portion of the mounting member in a reciprocatable manner along an axis of the mounting member, the spool being supplied with a fluid discharged from an outside pump, wherein a first port and a second port are provided at the tubular wall portion of the mounting member, the first port and the second port allowing a fluid to selectively flow to the advanced angle chamber (Ca) and the retarded angle chamber (Cb) or flow out from the advanced angle chamber (Ca) and the retarded angle chamber (Cb) based on a movement of the spool, a first flow passage connecting the first port and the advanced angle chamber (Ca) to each other and a second flow passage connecting the second port and the retarded angle chamber (Cb) to each other are provided at the driven-side rotational member, a thermal expansion coefficient of a material forming the driven-side rotational member is greater than a thermal expansion coefficient of a material forming the mounting member, and characterized in that a clearance is formed between the driven-side rotational member and the mounting member with an increase of temperature, through which clearance a fluid discharged from the pump is supplied to the advanced angle chamber (Ca) via the first flow passage and to the retarded angle chamber (Cb) via the second flow passage. a drive-side rotational member rotating synchronously with a crankshaft of an internal combustion engine; a driven-side rotational member fixed to a camshaft for opening and closing a valve to integrally rotate with the camshaft; an advanced angle chamber (Ca) and a retarded angle chamber (Cb) defined by the drive-side rotational member and the driven-side rotational member; a mounting member including a tubular wall portion and being coaxial with the camshaft, the mounting member mounting the driven-side rotational member to the camshaft; and a spool housed within a void which is defined by the tubular wall portion of the mounting member in a reciprocatable manner along an axis of the mounting member, the spool being supplied with a fluid discharged from an outside pump, wherein a first port and a second port are provided at the tubular wall portion of the mounting member, the first port and the second port allowing a fluid to selectively flow to the advanced angle chamber (Ca) and the retarded angle chamber (Cb) or flow out from the advanced angle chamber (Ca) and the retarded angle chamber (Cb) based on a movement of the spool, a first flow passage connecting the first port and the advanced angle chamber (Ca) to each other and a second flow passage connecting the second port and the retarded angle chamber (Cb) to each other are provided at the driven-side rotational member, a thermal expansion coefficient of a material forming the driven-side rotational member is greater than a thermal expansion coefficient of a material forming the mounting member, and characterized in that a clearance is formed between the driven-side rotational member and the mounting member with an increase of temperature, through which clearance a fluid discharged from the pump is supplied to the advanced angle chamber (Ca) via the first flow passage and to the retarded angle chamber (Cb) via the second flow passage.