A handheld household grinder, comprising a housing having an accommodating cavity (1.1), wherein a grinding rod is arranged in the accommodating cavity (1.1) of the housing; the upper portion of the grinding rod penetrates through the housing until the grinding rod is partially exposed out of the accommodating cavity (1.1); a stress block is fixed on the upper portion of the grinding rod outside the accommodating cavity (1.1); a through hole is formed at the corresponding location of the housing underneath the grinding rod along the length direction; the lower portion of the grinding rod penetrates out of the accommodating cavity (1.1) via the through hole or resets into the accommodating cavity (1.1) via the through hole; a coarse surface is formed on the external lateral wall and proximal to the lower portion of the grinding rod; when the grinding rod drives the coarse surface on the external lateral wall of the grinding rod to move into the through hole, the clearance between the coarse surface and the internal lateral wall of the through hole forms a grinding space for the materials to be ground; wherein a reset spring is arranged between the stress block and the housing, and the two ends of the reset spring abut against the housing and the stress block respectively; characterized in that a working cavity (1.2) is arranged on the housing above the accommodating cavity (1.1); the upper portion of the grinding rod extends into the working cavity (1.2); the stress block and the reset spring are also located in the working cavity (1.2); an active block is arranged above the stress block in the working cavity (1.2) deviating from the grinding rod, wherein the inertia force of the active block is used to impact the stress block so as to grind the seasonings, when the user continuously shake the housing back and forth. a grinding rod is arranged in the accommodating cavity (1.1) of the housing; the upper portion of the grinding rod penetrates through the housing until the grinding rod is partially exposed out of the accommodating cavity (1.1); a stress block is fixed on the upper portion of the grinding rod outside the accommodating cavity (1.1); a through hole is formed at the corresponding location of the housing underneath the grinding rod along the length direction; the lower portion of the grinding rod penetrates out of the accommodating cavity (1.1) via the through hole or resets into the accommodating cavity (1.1) via the through hole; a coarse surface is formed on the external lateral wall and proximal to the lower portion of the grinding rod; when the grinding rod drives the coarse surface on the external lateral wall of the grinding rod to move into the through hole, the clearance between the coarse surface and the internal lateral wall of the through hole forms a grinding space for the materials to be ground; wherein a reset spring is arranged between the stress block and the housing, and the two ends of the reset spring abut against the housing and the stress block respectively; characterized in that a working cavity (1.2) is arranged on the housing above the accommodating cavity (1.1); the upper portion of the grinding rod extends into the working cavity (1.2); the stress block and the reset spring are also located in the working cavity (1.2); an active block is arranged above the stress block in the working cavity (1.2) deviating from the grinding rod, wherein the inertia force of the active block is used to impact the stress block so as to grind the seasonings, when the user continuously shake the housing back and forth.