The invention discloses a low-voltage DC boost conversion and control circuit. A clamping capacitor is introduced at a primary side, and thus, the voltage peak of a power switch transistor can be clamped at twice the input voltage, a leakage inductance switch spike caused to the traditional push-pull circuit due to low-voltage large current can be solved; a resonant capacitor is introduced at a secondary side, and thus, a soft switch for realizing on and off functions under zero voltage and zero current can be realized; and a full-bridge rectifier circuit is selected at the secondary side, and higher output voltage can be realized.