Hypocalcemia can cause convulsions mainly because the lowering of blood calcium causes increased neuromuscular excitability, thus causing convulsions. Nerve and muscle cells in the resting state show a negative potential difference between the inside and outside, the concentration of sodium ions outside the cell is higher than inside the cell, calcium ions can inhibit the influx of sodium, when suffering from hypocalcemia, the inhibitory effect will be weakened, resulting in increased neuromuscular excitability, so that the neuromuscular tissues appear to be a sustained contraction, resulting in convulsions. When convulsions occur, you should go to the hospital as soon as possible, under the guidance of professional doctors to identify the causes of convulsions and treat them as soon as possible to avoid delays.